Avatar stopped moving returning from Pairing Menu

This morning I was riding with a RoboPacer. 9km done without issue. Realised one of my ZwiftPlays had disconnected.
Stopped and went to Pairing screen, re-connected controller, everything showing Blue (smart trainer, HR, Cadence, Power).
Returned to game. Display was showing power, HR, and avatar pedalled but would not move. Retried several times but had to exit ride in the end and restart, when everything was fine again.

Sorry some further detail: I’m running Zwift on a Windows 10 PC. Saris H3 turbo connected via ANT+, ZwiftPlays are connected via Bluetooth.