Possible software defect? Virtual shifting + workout

I’m on Zwift Hub with Zwift Play and I connect hardware via Companion on iPhone. Virtual shifting has worked great for me, but something odd happened on today’s workout: I did the workout with ERG on (default). When the workout ended, ERG turned off, obviously, but virtual shifting never became an option. Zwift Play still worked and I confirmed via devices screen that I’m still connected via bluetooth/Companion. I tried joining another ride… still no shifting.
The only was to get it back was to fully exit the game and restart it.

Anyone else experience this? Any other way to get shifting back without restarting?