2015 sync 2 to sync 3 upgrade issues

[F150Chief]

Sync 3.4 camera zoom not working

Hi all. I have searched for this but found no answer. Last week I did the 3.3 to newest release 3.4 update, and so far everything seems to work fine. Except for the backup camera zoom. I don’t use that option a lot but when I do need it, it’s nice to have it. Any reason the zoom feature would stop working? The + sign shows up on the screen as is normally did and makes a beep when you touch it. But nothing happens. Thanks in advance!!