Understand the failure.
Verify the repair.
Small, reproducible software failures. The broken implementation, the fix that didn’t work, and the one that passed—preserved together.
Explore the cases ↓How results are verified ↗WHAT THE ARCHIVE CONTAINS
100840 executable cases. 20168 are open.
Every case records the implementation that fails, the fix that did not work, and the repair that passed its checks—with recorded outputs and source hashes. This release adds 100840 cases across 20168 failure mechanisms and 254 domains.
The open tier gives you the failure and the unsuccessful fix for one case in every mechanism. The remaining 80672 cases, 5 variants per mechanism, are member-only: the verified repair, its recorded checks, and the full fixture suite are held in the member archive. Read the methodology ↗
A RECORD OF WHAT WENT WRONG
Browse the archive / 100840
Collapse empty pane: active pane transfer · case 01
The tab workspace reports an incorrect active pane transfer.
Collapse empty pane: active pane transfer · case 02
The tab workspace reports an incorrect active pane transfer.
Collapse empty pane: active pane transfer · case 03
The tab workspace reports an incorrect active pane transfer.
Collapse empty pane: active pane transfer · case 04
The tab workspace reports an incorrect active pane transfer.
Collapse empty pane: active pane transfer · case 05
The tab workspace reports an incorrect active pane transfer.
Collapse empty pane: promoted extent · case 01
The tab workspace reports an incorrect promoted extent.
Collapse empty pane: promoted extent · case 02
The tab workspace reports an incorrect promoted extent.
Collapse empty pane: promoted extent · case 03
The tab workspace reports an incorrect promoted extent.
Collapse empty pane: promoted extent · case 04
The tab workspace reports an incorrect promoted extent.
Collapse empty pane: promoted extent · case 05
The tab workspace reports an incorrect promoted extent.
Detach window geometry: horizontal anchor · case 01
The tab workspace reports an incorrect horizontal anchor.
Detach window geometry: horizontal anchor · case 02
The tab workspace reports an incorrect horizontal anchor.
Detach window geometry: horizontal anchor · case 03
The tab workspace reports an incorrect horizontal anchor.
Detach window geometry: horizontal anchor · case 04
The tab workspace reports an incorrect horizontal anchor.
Detach window geometry: horizontal anchor · case 05
The tab workspace reports an incorrect horizontal anchor.
Detach window geometry: vertical anchor · case 01
The tab workspace reports an incorrect vertical anchor.
Detach window geometry: vertical anchor · case 02
The tab workspace reports an incorrect vertical anchor.
Detach window geometry: vertical anchor · case 03
The tab workspace reports an incorrect vertical anchor.
Detach window geometry: vertical anchor · case 04
The tab workspace reports an incorrect vertical anchor.
Detach window geometry: vertical anchor · case 05
The tab workspace reports an incorrect vertical anchor.
Detach window geometry: window ownership · case 01
The tab workspace reports an incorrect window ownership.
Detach window geometry: window ownership · case 02
The tab workspace reports an incorrect window ownership.
Detach window geometry: window ownership · case 03
The tab workspace reports an incorrect window ownership.
Detach window geometry: window ownership · case 04
The tab workspace reports an incorrect window ownership.
Detach window geometry: window ownership · case 05
The tab workspace reports an incorrect window ownership.
Detach window geometry: document continuity · case 01
The tab workspace reports an incorrect document continuity.
Detach window geometry: document continuity · case 02
The tab workspace reports an incorrect document continuity.
Detach window geometry: document continuity · case 03
The tab workspace reports an incorrect document continuity.
Detach window geometry: document continuity · case 04
The tab workspace reports an incorrect document continuity.
Detach window geometry: document continuity · case 05
The tab workspace reports an incorrect document continuity.
Detach window geometry: zoom continuity · case 01
The tab workspace reports an incorrect zoom continuity.
Detach window geometry: zoom continuity · case 02
The tab workspace reports an incorrect zoom continuity.
Detach window geometry: zoom continuity · case 03
The tab workspace reports an incorrect zoom continuity.
Detach window geometry: zoom continuity · case 04
The tab workspace reports an incorrect zoom continuity.
Detach window geometry: zoom continuity · case 05
The tab workspace reports an incorrect zoom continuity.
Detach window geometry: workarea overflow · case 01
The tab workspace reports an incorrect workarea overflow.
Detach window geometry: workarea overflow · case 02
The tab workspace reports an incorrect workarea overflow.
Detach window geometry: workarea overflow · case 03
The tab workspace reports an incorrect workarea overflow.
Detach window geometry: workarea overflow · case 04
The tab workspace reports an incorrect workarea overflow.
Detach window geometry: workarea overflow · case 05
The tab workspace reports an incorrect workarea overflow.
Tab group collapse: collapsed member visibility · case 01
The tab workspace reports an incorrect collapsed member visibility.
Tab group collapse: collapsed member visibility · case 02
The tab workspace reports an incorrect collapsed member visibility.
Tab group collapse: collapsed member visibility · case 03
The tab workspace reports an incorrect collapsed member visibility.
Tab group collapse: collapsed member visibility · case 04
The tab workspace reports an incorrect collapsed member visibility.
Tab group collapse: collapsed member visibility · case 05
The tab workspace reports an incorrect collapsed member visibility.
Tab group collapse: header count · case 01
The tab workspace reports an incorrect header count.
Tab group collapse: header count · case 02
The tab workspace reports an incorrect header count.
Tab group collapse: header count · case 03
The tab workspace reports an incorrect header count.
Tab group collapse: header count · case 04
The tab workspace reports an incorrect header count.
Tab group collapse: header count · case 05
The tab workspace reports an incorrect header count.
Tab group collapse: dirty group indicator · case 01
The tab workspace reports an incorrect dirty group indicator.
Tab group collapse: dirty group indicator · case 02
The tab workspace reports an incorrect dirty group indicator.
Tab group collapse: dirty group indicator · case 03
The tab workspace reports an incorrect dirty group indicator.
Tab group collapse: dirty group indicator · case 04
The tab workspace reports an incorrect dirty group indicator.
Tab group collapse: dirty group indicator · case 05
The tab workspace reports an incorrect dirty group indicator.
Tab group collapse: active placeholder · case 01
The tab workspace reports an incorrect active placeholder.
Tab group collapse: active placeholder · case 02
The tab workspace reports an incorrect active placeholder.
Tab group collapse: active placeholder · case 03
The tab workspace reports an incorrect active placeholder.
Tab group collapse: active placeholder · case 04
The tab workspace reports an incorrect active placeholder.
Tab group collapse: active placeholder · case 05
The tab workspace reports an incorrect active placeholder.
Tab group collapse: reveal expansion · case 01
The tab workspace reports an incorrect reveal expansion.
Tab group collapse: reveal expansion · case 02
The tab workspace reports an incorrect reveal expansion.
Tab group collapse: reveal expansion · case 03
The tab workspace reports an incorrect reveal expansion.
Tab group collapse: reveal expansion · case 04
The tab workspace reports an incorrect reveal expansion.
Tab group collapse: reveal expansion · case 05
The tab workspace reports an incorrect reveal expansion.
Tab group collapse: membership retention · case 01
The tab workspace reports an incorrect membership retention.
Tab group collapse: membership retention · case 02
The tab workspace reports an incorrect membership retention.
Tab group collapse: membership retention · case 03
The tab workspace reports an incorrect membership retention.
Tab group collapse: membership retention · case 04
The tab workspace reports an incorrect membership retention.
Tab group collapse: membership retention · case 05
The tab workspace reports an incorrect membership retention.
Group block move: group block order · case 01
The tab workspace reports an incorrect group block order.
Group block move: group block order · case 02
The tab workspace reports an incorrect group block order.
Group block move: group block order · case 03
The tab workspace reports an incorrect group block order.
Group block move: group block order · case 04
The tab workspace reports an incorrect group block order.
Group block move: group block order · case 05
The tab workspace reports an incorrect group block order.
Group block move: group source removal · case 01
The tab workspace reports an incorrect group source removal.
Group block move: group source removal · case 02
The tab workspace reports an incorrect group source removal.
Group block move: group source removal · case 03
The tab workspace reports an incorrect group source removal.
Group block move: group source removal · case 04
The tab workspace reports an incorrect group source removal.
Group block move: group source removal · case 05
The tab workspace reports an incorrect group source removal.
Group block move: group boundary rebase · case 01
The tab workspace reports an incorrect group boundary rebase.
Group block move: group boundary rebase · case 02
The tab workspace reports an incorrect group boundary rebase.
Group block move: group boundary rebase · case 03
The tab workspace reports an incorrect group boundary rebase.
Group block move: group boundary rebase · case 04
The tab workspace reports an incorrect group boundary rebase.
Group block move: group boundary rebase · case 05
The tab workspace reports an incorrect group boundary rebase.
Group block move: self drop detection · case 01
The tab workspace reports an incorrect self drop detection.
Group block move: self drop detection · case 02
The tab workspace reports an incorrect self drop detection.
Group block move: self drop detection · case 03
The tab workspace reports an incorrect self drop detection.
Group block move: self drop detection · case 04
The tab workspace reports an incorrect self drop detection.
Group block move: self drop detection · case 05
The tab workspace reports an incorrect self drop detection.
Group block move: group active retention · case 01
The tab workspace reports an incorrect group active retention.
Group block move: group active retention · case 02
The tab workspace reports an incorrect group active retention.
Group block move: group active retention · case 03
The tab workspace reports an incorrect group active retention.
Group block move: group active retention · case 04
The tab workspace reports an incorrect group active retention.
Group block move: group active retention · case 05
The tab workspace reports an incorrect group active retention.
Group block move: block size · case 01
The tab workspace reports an incorrect block size.
Group block move: block size · case 02
The tab workspace reports an incorrect block size.
Group block move: block size · case 03
The tab workspace reports an incorrect block size.
Group block move: block size · case 04
The tab workspace reports an incorrect block size.
Group block move: block size · case 05
The tab workspace reports an incorrect block size.
INSPECTABLE BY DESIGN
Every result has a runnable source.
Runnable implementations with recorded outputs, source hashes, and explicit contracts. Related variants share a failure mechanism and belong together in evaluation splits.
Read the methodology ↗