Like many users, I've been trained to ignore anything that happens in my peripheral vision and when appropriate, deal with it later. Notifications, mentions.. Sadly "dealing with it later" is not really an option when it comes to accidentally spilling your IP after having been unexpectedly logged out. As a result, I had to bother a Wikidata sysop to remove my IP.

I don't appear to be alone as @Adithyak1997 requested a banner to be shown with a warning, and it's probably no accident that Adithyak1997 is most active on Wikidata.

I have attached screenshots of the current warning placement and a proposal. (this is just an edited screenshot, no code) Also note that on smaller screens the ToU and license pop-up can largely cover the warning about not being logged in.