[2023] Most DLC showing as "Not owned" in-game [Linux]

Dashos said: I already tried doing a "clean reinstallation" by uninstalling the game on steam, deleting all the launcher files, and installing it again

Deleting the launcher files has no effect on the game whatsoever.

Here's the clean reinstall process for this game:

- move any valued save games elsewhere
- "uninstall" in Steam-EU4
- manually delete both the Steam/SteamApps/common/Europa Universalis IV AND Documents/Paradox Interactive/Europa Universalis IV folders
- re-install game in Steam, run a Steam Verify when done.
- add EU4.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
- start the game with no mods active and test

In particular make sure there are no files or folders left under either the Steam EU4 or Documents EU4 locations, before installing again.