3 votes
Accepted

Mystery popup window

As Martin Sleziak correctly suggested, it turned out to be the cookie acceptance notification: an ad blocker forced it to close immediately.
3 votes

Any chance of a "save for later / TODO" feature?

The feature called "bookmarks" was recently completely overhauled by Stack Exchange and it is now called saves: Bookmarks have evolved into Saves Recent feature changes to Stack Exchange - ...
2 votes

Occasional "echoed" usernames in Firefox

Suggestions in the comments by David Roberts and The Amplitwist turned out to be correct. I switched out enhanced tracking protection, and that thing got replaced with a picture of the user. Still I ...

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