Some people have reported that the problem which is currently affecting the Alexa/smartthings integration is also affecting the Ifttt/smartthings integration. If that’s true, then some senseor triggers are not being reported to the third-party service, but it’s sort of random.
This affects both physical and virtual devices, but again, randomly.
Engineering is working on the problem.
You’ll have to read down the thread to see where the discussion about the problem starts.
New SmartThings Alexa skill (2020)
Again, I have not seen it officially confirmed that this issue is affecting services other than Alexa, but it might be.