I am using Brave on Windows 10, I noticed a couple things on the first day I started using Brave.
This happened after what I think was some connection issues after Brave. The refresh button was not working but I could click in the URL bar and then click enter for it to load fine. Video: https://streamable.com/uqmzy
IIRC I was browsing normally and all the sudden my tabs froze up. I could not click or exit out of any of them. I just closed down and restarted Brave and it worked normally. Video: https://streamable.com/14nmt