In the system display window I have noticed it switching between this
to this
and back.
I do not know if the Site is doing it or if DSDPlus is having a bad day. It doesn't happen often just seldom.
It's conserving vertical space when it has seen the same RF channel used for Phase I and for Phase II calls on both timeslots. 3 channel entries in the space of two.
If the display resets due to bad decoding, it'll start all over.