I am just writing about the enlarged SB I mentioned here:
viewtopic.php?p=200695#p200695
Not sure if you saw the splitter theory I had in the last comment I left in this thread, but I just thought I would add some extra info anyway, I seem to have narrowed it down to occurring when the PC is put to sleep, then when resumed from sleep, the issue happens, and if two XY instances are active, it seems to only happen to one window, and not always, which makes it not easy to repro, so this info probably won't help anyway. One other thing is that it seems to only happen in a RO instance, but that could be just coincidental.