Recording issues – Kodi or backend problems?

I’ve noticed a few recording-related issues with Kodi 17 + estuary + NextPVR backend. I assume they are backend-related rather than Kodi itself, but I’d like someone who understands these things better to confirm.

– The EPG should show a red dot against a program that is being recorded, but does not. (the red dot does show up in the widget list though)
– If I start playing a program that is being recorded, I should be able to play it from the beginning of the recording, but I find I can only play it from where I started playing.

Are these things expected behaviour, or do backends differ a lot in their capabilities? I already know NextPVR is a bit incomplete with timeshifting, so would not be surprised if it’s to blame here too.