When logging in again after the timeout had been exceeded, PMA shows red rectangle in the main window (with no error in it - maybe it is a pmahome theme bug?) - error shown in the source code says "Incorrect format parameter" - and there is the loading icon in the left-side database panel. Clicking on any link pops up a new timeout error with log in request again. This happens on and on until I click Log out or delete the token from URL.
My auth_type is "cookie" and I have the Do Not Track option enabled in Firefox if it helps.
The URL after a few timeout/log in cycles (I thing they were 3):
The issue persists in PMA 4.1.6.