Okay so I installed the patch and got ingame.
I have saves of empty towns (these are all edited to my likings without I ever played a sim in there).
I started playing a newly created sim in my Lucky Palms save and did save as to make a new save. I bought her a wall mirror and every time I wanted her to practice her speech, she didn't walk to the mirror that was upstairs. She walked to the front of the lot near the mailbox and then she started stomping her feet showing the bubble of a blockage.
I tested this with 2 wall mirrors, one from the base game and one for the store. I tried hanging one downstairs instead but the same issue happened.
No problems with standing mirrors though.
I have no mods or CC. Before running the patch I cleared my caches, dcbackup (except ccmerged) and worldcache.
Anyone else having this problem?