After updating FR 255 to version 19.18 watch stop to count strokes in open water activity

This starts to look like a general data recording issue

forums.garmin.com/.../19-18-forerunner-255-permanently-loosing-gps-during-bike-rides

Is it possible to downgrade or roll back firmeare. 

Nop

So I have to wait for firmeare fix

Maybe it is a bit early to assume it is a firmware bug. Has anyone else encountered the issue? The GPS issue (also only reported by one person) does not seem related.

I had the same issue but in poll swimming, it started working again, but not like it was before. 

I'm also having issues with GPS on running activities.  The elevation and power data does not work, it keeps 0 the entire activity even when I'm running in places with a lot of elevation variation

Counting strokes do not work every time, it count's few times, then stop count for 2 times, then back to counting, then no ...

Always using build in open water swimming app (original garmin), it's very unreliable.

And same here. As of this summer, my FR255 records strokes only on some of my swimming activities.

Same problem in Croatian Sea. 8 open Sea swim 3 with strike count 5 with 0 strike. Always swimming in Freestyle the Watch with the previous firmware counted strokes well.