We introduced checking of overlapping recordings on hybrid devices. I noticed this just recently that some devices were not being treated as combo but rather as hybrid (all european boards are hybrid not combo)
We'll be making changes around this for CD 1.1d which is targeted at ATSC/QAM products (1.1b was aimed at DVB boards mainly, though obviously there is a lot of overlap)
Renderer changes happen after stopping TV, so if you press STOP then TV again, it will have changed.
We have seen some reports on ATSC of the behaviour you describe and are looking at the cause (doesn't seem to happen on DVB-T), pressing rewind on the app should fix this??
Thanks for the feedback.