Last modified: 2012-12-17 10:26:37 UTC
The activity log next to a feedback has the title "Activity log" in English and German interface. I think MediaWiki:Articlefeedbackv5-activity-pane-header should be the right localization-message but the EN-msg there is "Activity Log" (DE: "Aktivitäten-Logbuch") so it seems the popup-title doesn't use the/any localization-message
Hrm, that one was indeed hardcoded; fixed with https://gerrit.wikimedia.org/r/#/c/38151/