A title-region press refused while another drag held the slot, `SetLayoutMode` stored nothing, and a press on a chat link made the chat frame itself the target, so every link click started a title move of the window.
In 1.12.1 the drag entry takes the slot unread (`0x7652b0`); a mid-drag press goes to the frozen hover (`0x76637f`). With `SetLayoutMode` (`0x488540`) on, a Ctrl or Alt press drags the nearest movable toplevel (`0x765490`) from a 3×3 grip grid (`0x765320`) and is consumed, world included; its release only ends the drag (`0x7664e0`). Each link span is its own Button (`0x7a3240`) routing `OnHyperlinkEnter`/`Leave`/`Click` to the parent (`0x7a3780`–`0x7a37e0`).
These now hold; a release goes to the capture whatever its button (`0x76642b`), and number arguments keep `_ftol`'s low dword.
Tests bite on the parent for each.
Fixes#951Fixes#952Fixes#957🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
