button in the Image slot in the Brush panel Caused/exposed by rBaf9ca138ba7b Also relevant was rB828905190e12 Above commits moved the WM_UI_HANDLER_BREAK around so it would not be returned anymore. We need WM_UI_HANDLER_BREAK, otherwise we wont get through to to KM_RELEASE. There are two places that explicitly check for KM_RELEASE (call to `ui_do_but_extra_operator_icon` in both `ui_do_but_SEARCH_UNLINK` / `ui_do_button`), and without the above we only ever get here with KM_PRESS. This patch restores the behavior regarding WM_UI_HANDLER_BREAK to what is was before the two culprit commits. Checked that both this report (T72089) and T69755 are working. Maniphest Tasks: T72089 Differential Revision: https://developer.blender.org/D6363