Rule 1 of troubleshooting with mods is to try a new game without the mods.
Common sense should tell you that if the game has problems after it updates but the mods haven't updated then there is a good chance that one or more of the mods may be the problem.
I never download anything the moment it is released. With BG3 I will wait until the mods have updated before I update the game. About five of the mods I use have already updated.
I am only running the party mod and not Bags etc and have this issue.
Which party mod? There are three that I know of. Always give the name of a mod because mods are not all the same.
Just because the 'party' mod is not Bags, Bags, Bags it does not mean that it is not the cause of your problem.