- Selecting a mask in the Timeline (its row or Mask Path), or a shape's
Path, selects all its points, so dragging one in the viewer moves the
whole mask, as in After Effects. Delete still removes the mask, and
selecting another property deselects the points.
- Mask Feather has the chain link (Constrain Proportions, on by
default, Alt edits one value) and no longer takes negative values;
Scale's link shows as a toggle too.
- Dragging in the Project panel's empty area draws a selection box
(Shift / Cmd adds); a click there deselects.
Tests: selecting_a_mask_selects_its_points,
mask_feather_values_are_linked_and_not_negative,
dragging_in_the_empty_area_box_selects_items.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018gnTnH3Jmk5zr4tMq1Mc9f
b4d2d58eeb