Pool swim rest and non detected swim lengths eg. underwater.

Ok, in the last week or so (I think) I noticed a change in what's being recorded on my Fenix 6, namely swim rest times and measurement of kicking/underwater laps.

Pressing the lap button would record everything, a rest would have no swim distance, as would the underwater/kicking laps. So swim time and distance were consistent, total distance and therefore total time were not.  I could live with that, and I could track my progress afterwards on the underwater/kicking activities.

Something has changed rest times (and underwater/kicking times are not shown at all).  Please help, can I make it go back to what it did before?

Is there a way of manually getting it to record a time when under water/kicking.

Did I miss the communication on what ever has changed and why?