I did a workout. The last cooldown segment was 85 watts. I tabbed through the last few segments because I had a race to join. It took me to the end ride summary screen. I clicked back, then the Join Event button. I sat 7 minutes in the pens spinning my legs and not paying attention to watts, and when the race started I discovered I was still stuck in ERG mode, and maxxed out at 85 watts in my hardest gear (and every other gear). No way to fix it, race ruined.
I prepared for hours to do well in this race, so I’m not happy. ERG mode should never be active outside a workout!
Severe bug with an easy fix, so Zwift is sure to not fix it for years.