In the unity web player, when you put the game on fullscreen, on a computer with resolution 1366x768, if you play at 1280x720, when you exit fullscreen, the entire browser window remains at 1280x720, which is smaller than the actual resolution. The browser window then needs to be restored down and then maximized again.
This started happening right when the NPAPI plugins had stopped working, and in the newer version it was corrected. From that version onward, this issue has existed.
Please look into it.
Thank you.