I'm still running an old app Tclock2:
7+ Taskbar Tweaker has some minor conflict with Tclock2.
When (after) the conflict occurs, 7TT will fail to maintain the "Open with double click (on Pinned items)" feature. And Windows Explorer will crash when 7TT exits. Nothing else so far as I see.
I wonder if the conflict can be resolved on your side.
Customer support service by UserEcho