From Brave when clicking on posting a message is always thinking and is never posted.
From Edge it works fine.

Is this normal?

The forum works fine for me with Brave (Chrome clone), which I have been using here for years.

So something else will be causing your issue ... an addon perhaps, or just a temporary glitch.

EDIT
Or as BreO172 later suggests, your post might be hanging due to incorrect formatting ... an incorrect start or end Quote tag or one of those is missing ... same for any other formatting like Bold or Underline or URL etc.

Yeah, that's an issue on your end.

You probably tried to quote another user?
And you edited that quote?

Thing is: if you (accidentally) delete any part of [.quote_1.] or [./quote.] it won't post your comment, but will hang endlessly in the "sending" loop.

Try to create backup of your Brave profile folder:
on Windows: C:\Users\<username>\AppData\Local\BraveSoftware\
on Mac: Users/<username>/Library/Application Support/Brave/
on Linux: /home/<username>/.config/BraveSoftware/
then remove this folder and restart Brave (it will create clean profile), then login to GOG and try to write here.

I'm using Brave right now and I'm not having any issues.

Ok, thanks to everybody for answering.
I will test your suggests.

Regards.