On (dewiki) beta labs the gadget tab is suddenly missing in the preferences, but the extension is still listed at Special:Version.
Possible cause:
https://gerrit.wikimedia.org/r/#/c/158809/
https://gerrit.wikimedia.org/r/#/c/162655/
It seems to be possible that the new functionality to disable gadget caching causes the breakage.
(should this report moved to the Gadgets-Product?)
Version: master
Severity: normal
URL: http://de.wikipedia.beta.wmflabs.org/wiki/Spezial:Einstellungen?uselang=en