On latest trunk I'm getting a login screen when clicking on the "Activate/Deactivate" link on any plugin. After logging in again the plugin is activated/deactivated as expected.
If this behaviour is on purpose then I think there should be a way to activate/deactivate multiple plugins at once (checkbox + "Activate/Deactivate selected")
I didn't find any changes on the CorePluginAdmin plugin that could've caused this issue in the last few weeks.
I'm logged in as the super user of course. Reproducable on multible machines - so browser/cache should not be involved in this.
This is a regression from .
(In ) Fixes #1481
Admin UI pages were requiring period,date throwing an exception when not set properly as was the case after plugin disable. Made these screens not set date/period as calendar is never shown.