The exact same issue happens when you end a ride and try change the “ACTIVITY TITLE”
In the case of the screenshot below, if I use the arrow keys to move the cursor around, it simply moves to the “FOLLOWERS” box on the right.
Mac mini M1
macOS Ventura 13.3.1
Zwift 1.39 (this issue did not exist on 1.34)
Cheers,
Chris.