Lags & Invisible, Frozen & Stuck Sims --> Post here if you have the issue.

The consignment store thing is another bug (it's actually at least two).

Somehow already consigned items can have a negative number of days left making the store unusable. This occurs usually after traveling. The negative number one can be fixed in some cases by removing them (if you can access the list with consignments active) and Twallan's SP also has a fix.

I can't believe that I actually forgot what the other one was. My brain must be filled up with Sims stuff. No more room.