Using the latest Remix, Wrangler and Sentry packages - with nothing much extra.
The git history should be pretty followable if you want to follow the steps yourself.
There are 3 routes:
/client- (The default sentry clientside error example)/action- A form that when submitted, throws an error/loader- A page that when loaded, throws an error
Client side errors come through perfectly - and so do serverside errors - until it's deployed.
The moment it's actually on a Cloudflare worker - serverside errors always come through as Unexpected Server Error without any details.