I had an issue (maybe that is the problem) where Ctrl++ acted like Ctrl+-.
Trying now (on XP) I'm not seeing any problem.
Perhaps I was on Win7 at the time?
I'm not sure I understand your post...I'm on XP and I also use that program(I have a hotkey Ctrl twice that bring a list of 20 items(clipboard history))but nothing out of ordinary happens when I press Ctrl++ or Ctrl+-
It's not CLCL...Everything uses Ctrl+Num+ for zooming in(which is a global hotkey)and also uses Ctrl+Num+ to auto fit the columns.This gives weird results.
It's just that when Ctrl+Num+ is set to autofit the columns,if the search result is the focused element of the everything window,you can't zoom in.
Ctrl+Num- is zooming out(making the font smaller)but Ctrl+Num+ is not zooming it(making the font bigger)because AutoFit takes priority over zoom in when the focused element is the search result