Hi, I've now seen this bug in both MC14 and MC16, so as MC15 is the current production version, I guess this is the place to ask.
I run almost exclusively in Theater View with a full HD display, connected via HDMI. ATI HD4200 graphics (I think, but latest drivers anyway.). Installation (for MC16 at least) is straight out of the box, no tweaking of sizes, borders etc. TV is displaying full image, so no cropping, or zooming.
Most of the time, everything is OK. However, if I'm playing music, I tend to put the TV is standby. When I power it back on, MC seems to get confused about the Theater View image size. Sometimes it's too small, so you end up with a Theater View "window" (but without any Windows edging, controls etc) sitting on top of the normal Windows desktop (always top left). The underlying desktop is sized/scaled normally. The Theater View "window" functions OK, with text, thumbnails etc. the usual size. It even adjusts the columns to cater for the new image size.
On other occasions the Theater View "window" is too large for the screen. So you see it as if you are looking at the top left hand corner of the normal view. The menu bar starts somewhere towards bottem right and seems to continue off the edge of the screen. Again the Theater View functionaliy is intact, eg, you can scroll to and select menu items which are on, and off the edge of the screen, and columns have been recalculated.
I can get rid of the problem in several ways. Selecting anything that displays an image (but not just thumbnails) seems to cause Theater View to re-size correctly. Taking it out of Theater View and back again also does the trick.
I've not been able to confirm it, but the Theater View "window" looks like it may be re-sizing based on the actual size of the image being displayed. Maybe it's a timing issue with the display card talking to the display when it powers up, but Windows itself seems to get around this...
Any help would be appreciated.