When doing a box selection in the dopesheet in the header area, the data block type was changed to annotation because the pointer was not usable and produced an unexpected result. Thanks to @pullup for finding a way to reproduce the bug.
When doing a box selection in the dopesheet in the header area, the data block type was changed to annotation because the pointer was not usable and produced an unexpected result. Thanks to @pullup for finding a way to reproduce the bug.