It must be something on your end because I don't see it. Tested on multiple browsers. Do you have any userscripts, like Tampermonkey, running or something like that?
I'm using Tor browser I haven't added scripts. I don't use my trust settings trust list it's got DefaultTrust so I've removed to test. It's still the same with the
# sign on PrimeNumber7.
I think it means that there is an active flag against the user. if you look at 1xbit accounts that have active flags against them, they have the "#" sign on their trust and if you look for other accounts that have flags against them but are inactive the "#" sign is not visible.
It is an icon for flag.
This is True.
There's a # sign for every user who has active type 1 flag and !!!: for every user who has active type 2 flag or active type 3 flag.
If it's displaying
# for flags why can't
decodx see it. He's used multiple browsers.