When I go to post a new discussion in any forum, it shuts Brave down. Not sure if it's just me.

Edit: I posted this using MS Edge.

Trouble free via windows 10 & 11, and android Samsung phone, all with Brave.

Posted this via my Samsung & Brave.
My work computer is Win11, haven't been on it since Friday, but had no issue.
Old work computer was Win10, been a bit over a week since I've used it.

I'd delete it and re-install, see if that fixed it.

Well, whatever the problem was this morning, it's working now.

(I didn't get around to reloading Brave...)

I am experiencing the same problem. New discussion just shuts down the browser.

Brave v 1.41.99
Mac Monterey V 12.5

I just tried the forum in Brave. No issues. Version 1.42.86, which is the latest. I suggest updating your browser and clearing all cached data.

https://brave.com/latest/

Then again, I'm using Win10. Brave has a "Reset Settings" option. You may want to try that.