@o4kapuk not sure how many or who have this issue. but I know of one more who have more or less the same scenario as me.
Played the game a while back, and just started to play again. (just updated the game, so not a fresh install as far as I know)
I will try to reinstall the game, only keeping my scripts.
- Copied "scripts" in AppData local screeps
- Uninstalled via steam
- removed screeps folder in appdata local
- removed screeps folder in steam
- install, and adding my scripts
Edit: Did not solve the issue.