If I select something in the Objects / Materials / OBJ Groups / Smoothing Groups Toolwindow (here after mentioned as the Tool window) but then figure I am in the wrong selection mode, changing mode will deselect the item(s) in the Tool window.
Example: I have Edge mode currently active. I select a mesh item in the Tool window and click the Select button, I then figure out I should have been in Polygon or Island mode because I'm not getting the selection I'm after. I select the mode I want, but the mesh item in the Tool window deselects. If the list is very long so you have to scroll, the scroll position is also reset.
This is a bit annoying because I have to scroll through the list again, select the (one, or several) mesh item(s) over again.