- `RegisterEvent` and `UnregisterEvent` match a name against the client's event table case-insensitively and drop a name that isn't in it (`0x702140`). A new gate checks that every event name the code fires is in the table.
- A visible XML frame resolves its layout at the post-load hook (`0x76a310` → `0x7680e0(1)`). So its first `OnSizeChanged` fires before its `<Frames>`, `OnLoad` and `OnShow`, as in 1.12.1. A hidden frame still waits for its show.
- `pending_events`' doc now says what the queue is: `SignalEvent` (`0x703e50`) runs handlers in place, and the Lua verbs that still queue are a gap.
- #890 was already fixed by #907; two stale comments around it are corrected.
Fixes#959Fixes#972Fixes#560Closes#890🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>