yes,
no fewer than one gremlin 'round these parts right now
...so i suspect it is a software issue.
I've updated my app(s) as per Captain Hardy's advice:
Tacx Training (also update firmware, if needed)
Zwift
Zwift Companion
I haven't tested yet -- hopefuly, before Tuesday...
Patrick (tacx flow user)
P.S.
Have you ever pulled off a 'watutski?'