Last modified: 2014-02-20 09:57:49 UTC
When changing to fullscreen mode, closing with the "X" and clicking on a different thumbnail, the lightbox will be fullscreen again. This is especially confusing since there is no obvious visual difference between the two modes, but in fullscreen some parts are missing. Tested in FF24.
Change 92999 had a related patch set uploaded by Gergő Tisza: Fullscreen fix https://gerrit.wikimedia.org/r/92999
Change 92999 merged by jenkins-bot: Fullscreen fix https://gerrit.wikimedia.org/r/92999
Not entirely sure of the connection, but 92999 seems to fix this.
Reopening this bug, because it is still happening very often.
This works correctly for me on beta enwiki. Fabrice, can you give steps to reproduce?
I'm going to say unconfirmed for now, this hasn't happened to me for a long time.
Fullscreen support has been entirely rewritten and isn't affected by this issue anymore.