When I rescan and channels are added they should be highlighted somehow or pop to the top of the list.
Why are you constantly rescanning for channels? You should scan once and if some are missing, scan the individual channel by itself. Multiple rescans are known to cause problems with some providers. For example spectrum won’t even complete an entire scan without locking your account for the day. You have to add a few channels a day after the initial scan with spectrum.
TVE is a beta and has many quirks and is constantly changing.
Rescan where? In the Channels DVR Server UI for a Source?
Or are you referring to the Channels List provided by the HDHR Ui web interface?
Channels DVR Server UI
Another post here suggests rescanning to add channels which were missed the first time.
What source channels are you talking about rescanning,
HDHR Tuner or TVE?
Most likely that is TVE channels.