OS: Windows 64bit
{Tag status} information displayed in fullscreen mode is not updated if tag is reset by cmd_untag
Effect: wrong tag information displayed
To reproduce:
1. Settings/View/Info/Insert>> add {Tag status}
2. Settings/View/Fullscreen: check "Show info"
3. Settings/Interface/Shortcuts/Viewer mode: assign shortcut U to "Untag current" cmd_untag
4. Tag a picture.
5. View picture in fullscreen mode
6. Tag status shows [X]
7. Press "U" to untag the picture
Actual behaviour (bug): Tag status still shows [X].

Expected behaviour: Tag status shows [ ]
cmd_untag resets the tag. Only displayed {tag status} in fullscreen is not updated. After moving to next picture and back again (pageup, pagedown) {tag status} is correctly displayed as [ ].