bc5ab4526a
It seems `ui_handler_region_menu/ui_handle_menu_event` doesn't handle any events other than press/double-click as they return `WM_UI_HANDLER_BREAK`. `KM_CLICK` event is not possible due to above case. i.e. clicked element can't be set active inside `ui_handle_view_item_event()`. (Guess `HANDLER_BREAK` also prevents from looping over keymap to find relevant keyitem pair to invoke the operator? Didn't check in details). To fix this, add a condition that checks whether button is in popup menu. If yes, force active the pressed button and keep the popup open. Pull Request: https://projects.blender.org/blender/blender/pulls/147047
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