It's been happening a while now. When I type @ i used to get a scrollable, alphabetic list which would refine as I typed in more letters until I got the poster I wanted.
Now I get a short list, usually headed by the OP, of apparently random other users. It's not scrollable and I have to type the other poster's exact ID, capitalisation, odd spellings, everything. If I get it wrong I could possibly @ the wrong poster or, more likely, I get told it's a nonexistent user and I can't post.
I'd like the previous experience please 🙏 😊
PS thanks for mostly sorting the colours out.