When viewing a thread topic I recently noticed the pop-up display of a topic's "thread title" that now appears as a constant or fixed or static rolling style title banner just below the forum's existing 10+ top located blue header/category band. I hope that OGR and Crowd Stack reconsider and turn off the use of this fixed title space eating add-on that eats up about 1 inch of vertical space on my 14" display. I've included a snapshot of this feature as displayed on a 14" display for your reference.
IMHO, the fixed/static title display feature might be useful for large spreadsheets or documents, but is more inconvenient on this forum that by "default" displays 20 replies, although 40, 100 or 200 reply displays are available options. Maybe the new feature helps those of us who might have memory lapses as to what topic we selected but thankfully I'm not quite there ...yet. ;-)
EDIT: Forgot to add that my attached pic is w/ Firefox browser but the same fixed thread title also occurs when I use chrome or the new MS edge browser. The fixed title only occurs when viewing within a thread, but does not occur when you scroll down within a forum category's listing of various thread topics.