Got it. So taking a look at your ride, I suspect the issue is to do with ERG, not Power Match.
In your working intervals the power tracks really well to target. It’s when you’re in the recovery intervals that things get out of control. I suspect what’s happening is that your trainer is trying it’s best to match your power target, but your power is all over the place and it looks like it’s all over the place because your cadence is going nuts.
But that can’t be right. I don’t think a cadence of 225 is real. So, then the question is why does your trainer think you’re doing all these wacky cadence numbers. Maybe other users with a setup similar to yours might have some good insights. The pattern is clearly when you start your recovery intervals, I’m guessing you just let off the power completely and slow spin for a bit. The best advice I can give is to not do that I know that’s bad advice on the surface, but do everything you can to just ride at a consistent cadence when the watts come off, at least for 20-30 seconds until your trainer settles on the new power. If you still need to back it off, I think it’ll handle it better from a more settled starting point.