| An action is disabled | Wait for compilation or fix the source diagnostic. L3 cannot own another detail. |
| I changed every occurrence of a participant | Identity and icon are shared. Width, position, and appearance are sequence-local. |
| A branch move is rejected | Check participant lifetimes, activation pairing, and fragment branch rules. |
| Show all is very large | Use pan/zoom, switch to an individual sequence, or reduce density. No scenario is silently omitted. |
| My custom text is hard to read after switching theme | Restore automatic colors or choose an appropriate fixed override. |
| A bottom header is missing | Destroyed participants end at their termination marker and are not repeated. |
| An icon looks generic | Clear the explicit choice or choose a valid catalog icon. Missing assets do not rewrite your AAL. |