I've moved to a new Windows computer and installed Thunderbird version 115.1.1 on it and transferred the old profile folder. It works fine for email and is picking up Usenet News but I can't get the Usenet News display working as it did before - now every message sequence turns into a thread showing just the first line or two of each message. And if click on the top level it opens every dependent posting in a new tab.
As far as I can see every setting for folders, layout, threads etc. is exactly the same as on my old computer, but clearly something is different. Has anyone else had a similar problem?