The Author of the Collapsed Mastodon add on for Firefox and Chrome had acknowledged an issue raised in the Git -- that Mastodon 3.1.x BREAKS the functionality of Collapsed Mastodon.

OMG, and HOW it does.

Took screenshot and will be adding to my extensive AWI Tutorial and Discussion topic on Discourse.

@freemo hope you are NOT planning to upgrade to this version yet ?

It would suck Eggs for me. Argh.

Details soon, screens captured, Rant Mode engaging.