Also should cadence include zero or not is not there, but that isn't even on the manual.

I don't understand why these are not there.

Still no change in beta 13.15

Garmin-Kevin can you explain why 955 doesn't have these power/cadence averaging settings?

Well, it's more of a missing setting. Eg. Edge 530:
https://www8.garmin.com/manuals/webhelp/edge530/EN-US/GUID-5BF2156B-9740-47F1-A564-FA22D55FDEB1.html

955 it's mentioned in per activity but only for Power averaging:
https://www8.garmin.com/manuals/webhelp/GUID-9D99A9D4-467A-4F1A-A0EA-023184FEA3DD/EN-US/GUID-E03FFCFD-15AD-401E-A15D-715629C6DBF0.html 

But if one looks at Bike activity, it's not there. Cadence is not even mentioned supposed to be there, but I think that kind of also should be, as those are pretty default settings people might want to change.

So kind of two issues:
1) Bike activity is not showing that "Power averaging" that is mentioned in the manual.  Tested Bike and MTB and even connected to Rally if showing of that is dependent on that. Not seeing that setting.

2) Why isn't there also "Cadence Averaging" setting?

Will this help?

In the manual it is written here Forerunner 955 Owners Manual - Activities and App Settings (garmin.com) and this item is not found in the cycling settings (as it was in the FR 945 or Edge)
Averaging the values is more consistent with the effort on the bike and does not count the zero values when not pedaling downhill for example.

Thank you both for the details that you each provided.  This makes it clear to me and gives me almost everything that I need to get this properly reported.  So that I may get this submitted for investigation, please answer the following:

1. May we, if necessary, have permission to email you?
2. May we, if necessary, have permission to view/access your Garmin Connect account?
3. In what country do you live?

1.Yes

2.Yes

3. Czech Republic

Well. I haven't much biked with 955, some MTB without Rally or even cadence sensor and winter is coming and I don't bike on winter. But generally, probably helps if more people there are on the ticket and I would like to see those settings, even I'm not totally sure how would I like them to be.

1. Yes
2. Yes
3. Finland

Hi after installing 14.08 finally the option of not counting null values has been added only it is in english not in czech :-)