Sad to see this is the case. I played XCOM 2 on PS4 (a long time after the patches were released for it), and it was still very bug-heavy. I'm sure they'll make things more stable on Switch than they currently are, but I wouldn't hold out hope for a perfect experience.
I was glad I read the following advice before playing on PS4, because it saved me hours of time. Save often and in multiple save slots. I don't see this bug listed above, but on PS4 it didn't affect the game until closer to the end. There was a problem where save files would be corrupted, and I had two separate save files both become corrupted! Luckily I had a string of 8 saves that I rotated through so I eventually found one that worked, but I can't imagine what I would be like to get through so far and lose everything.
It's a shame too because many people like to play games like this with only one save file so they don't have the option to go back if one of their soldiers died. I would recommend holding yourself accountable instead of trusting the save file, however.
It's also sad to see the character customization is currently bugged. That's one of my favorite parts of the game, designing the characters to be like my friends. It's fun and helps me keep better track of who's who, as well as makes me do everything I can to ensure everyone survives!
All in all, this is one of my all time favorites and I'm glad people can enjoy it on Switch. If you're thinking about buying it, I would recommend waiting a couple months for the patches to help. (Heck, it'll probably be a little cheaper then too!) But regardless of when you play, be very vigilant about having multiple saves.