1. Open LanguageStats
2. Select a group with outdated translations
3. Click an outdated translation
4. Add a space
5. Click another tab, e.g. "Outdated"

Observed: popup "You have unsaved translations."

6. Click another tab, e.g. "Translated".

Expected: no warnings.
Observed: same warning again.

(Repeat 6 at wish.)

Both Firefox and Chromium.

Version: master
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=48773