The event rewards feature the 'Master of Grudges' aspiration, which grants the ability to force Sims to visit a lot. A known technical issue exists where selecting this aspiration causes a permanent override of the standard 'Invite to Lot' interaction, making it impossible to restore the original function later.
I have tested this in a vanilla game (removed all MODS and cleared the localthumbcache.package file) and the issue still persists.
I am not a native English speaker and used translation software to write this report.
This is now happening to me too, after just clicking the master of grudges aspiration once to see what it entailed. My sim has no mischief skill and that’s now the only option to invite any sim over is to force them.
The Sims Team
