Sentry is a toolkit for game devs to monitor errors, performance and more and now it should work a lot better on Linux / SteamOS with Wine / Proton. While the Sentry developers discovered the issues on SteamOS due to games running on Steam Deck, their improvements apply to Linux as a whole for any compatibility layer based on Wine / Proton.
What happened? They detailed in a recent blog post how a game developer sent in a support ticket to note they were getting no information from crashes on Steam Decks. Sentry developers realised it worked fine in Linux builds, but not in Windows games running through Proton.
some games prompt you for bug reporting data collection, this is usually connected to sentry.
You can block their domain on a dns level (i think *.sentry.io would work?), or if the developer has their dsn (the url used for reporting metrics) exposed in a config file, you can probably blank it out without too much trouble.