As a consequence of this, subsequent box-selection of bones would not show correctly in Animation Editors (not showing the channels there because of the lack of an active object). The bug was caused by rBba6d59a85a38. Prior to said commit, code logic was relying on the check for `basact` being NULL to determine if object selection changes need to happen. After that commit, this was handled by a `handled` variable, but this was not set correctly if `basact` is actually NULL after the initial pick (aka deselection by picking). Maniphest Tasks: T101933 Differential Revision: https://developer.blender.org/D16326