Description of the issue:
When Startpage is selected as the default search engine, the built in “Anonymous View” or “Proxy view” option as it was known is very hit and miss. A lot of the time it displays "404 Session Not Found or the “Something went wrong” page. I have compared the same proxy option in the standalone Startpage App, on the same sites and these load without error consistently.
I have tried this on both my Samsung A21S and Samsung Tab S5e running android 10 and the latest Brave update installed today and both exhibit the same problem.