Snapshots don't store Preview mode for Live tab

3.1.1, but i think i have come across this in the past

i can't seem to record the Preview mode (in my case it's always Preview Pending) of a Live tab into a snapshot. or maybe it records but doesn't recall. i think that's an aspect of my live tab that should be part of a snapshot and i seem to remember that this had worked at some point.

thx, ueli