`EnableMouse(false)` only flipped the bit, so a frame disabled while pressed still got OnMouseUp and OnDragStart, and a hovered one kept its hover. A second mouse button pressed while one was held fired on the frame under the cursor rather than the held one.
In the reference, a mouse disable on a visible frame runs the same removal a hide does: the capture and the press drop, the hover ends with OnLeave at once. The down handler takes the held capture first and fires there, and a Button clicks on release only while PUSHED and with the cursor inside its own rect.
`EnableMouse` now runs that shared removal, the drag arm included. Presses go to the capture when one is held, and the Button release tests pushed and inside rather than topmost.
Tests cover a disable while pressed or hovered, chorded presses and the release gate.
Fixes#886Fixes#887
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
