I open a lot of different Wikimedia sites as User:Amire80, and I quite often see this pop-up:

(This is message centralauth-centralautologin-logged-in.)

Now, I might be very naïve because I'm really, really not a security expert, but if the software knows that reloading will get me fully logged in, why can't it just reload itself automatically?

Thanks for consideration.

P.S. I wanted to report this bug for years, and only now I finally did it. It surprised me that I couldn't find any dupes, but maybe I didn't search well enough.