I don't have the new expansion. I have the issue of not being able navigate the tree UI. If you try to move up the tree, it snaps back to the center of the tree. If you try to zoom out, everything shifts to the left. If you zoom back in, the tree is off the screen and if you try to move the tree into the center - you guessed it, it snaps back to empty screen. Once it does this, if you manage to actually wrangle the tree back to the center focus, the same behavior of centering on the tree happens again. This isn't past behavior, it isn't desirable behavior, it isn't useful behavior, so let's add a broken UI to big ol' complaint list. It was like this before the "fix" on the 19th. I should not have to click individual sims to see the top or bottom of the tree. Tracing a single family member to the beginning of a neighborhood save is a bit long, ya know? I know this isn't helpful or constructive, but at this point, these bugs are beginning to seem malicious.
The Sims Team