Also... Dunno if it's in any way related. When I start in windowed mode, I have, in about 2/3 of cases, window messed up in either a way that top of the should-be-visible area (including notification bar) hidden under the window title bar, or the bottom of the should-be-visible area cut off (not too noticeable on geoscape, but very much in combat mode).
Edit: attached the screenshot. The white square is another bug, related to trying to handle a medkit, though I didn't quite figure out how and why it happened, either due to r-click, being short on TUs to put it down, or something like that.
Edit2: the black area on top is where the window title is. F12 doesn't capture it...
Edit3: Gah. And forgot to mention. On the geoscape screendshot, notice what the latest notice is? UFO flying towards interceptor. The screenshot itself clearly shows it already being down -- and the relevant message is not visible.