Hello @iowaguy
currently brave version is
Version 1.46.153 Chromium: 108.0.5359.128 (Official Build) (64-bit)
while your post said you using version
Version 1.46.133 Chromium: 108.0.5359.71 (Official Build) (64-bit)
so does update fix the issue by the way i think the most updated version you will get for nix would be 1.46.144 based on that link
and i see they use the deb package from brave repository
so till the linux team replay if you interested to debug it you can run brave in debug mode and check the log maybe it help
this for mac but and for chrome but you at least know the correct flag you want
and here the command line for brave https://support.brave.com/hc/en-us/articles/360044860011-How-Do-I-Use-Command-Line-Flags-in-Brave-