PageSpeedInsights shows 0 CLS, but field data around 0.30 CLS

Lab data, as well as online analysis tools show my site to have 0 CLS issues in mobile and desktop versions. However, Google field data is showing 0.30 CLS issues, (Critical, no passing level!).

I want to ask: is this to be expected and typical? I have no other ideas on how to fix this. I wonder how people can still experience CLS…. perhaps they are on older devices that don’t respond to modern code, therefore having CLS issues?

Thank you! Dave