a48f685e2e
This is a regression caused by some previous refactor of the code, which was preparing it for transition to a tool-based tracking workflow. Some of the hot zones got tweaked, and a change in the behavior was done so that when click happens far away from any slidable marker "widget" all markers gets de-selected (which matches behavior in 3D viewport). The pixel tolerance did not apply UI scale factor, and applied zoom level after squaring (which is wrong calculation of pixel space in screen space). Ref #119773 Pull Request: https://projects.blender.org/blender/blender/pulls/119971