Huh - weird. Well one thing I'll say is that we're not going to 100% support bugs in the full theme being used on mobile - the product isn't designed for that, and too difficult for us to track down.
I will keep an eye out for anything regarding this, especially the occurrences in Windows. If...
This issue makes me go :scratch
I won't be able to fix it without reproducing it, so if you can detail the exact steps, Twibli, that may help.
However, we'll be moved over in a few weeks, so if you can hang on that long :) I'm not sure if it's just an annoyance or makes posting impossible?