I just noticed last night that I can not operate the radios correctly in VC mode. I have to use the pop up radio stack. Example, if I click the switch comm frequency in the VC it appears to switch but nothing happens. If I pop up the stack, the frequencies have not switched. Also tuning the radio in VC appears to work but no changes are made in the pop up stack.
This was just a quick observation. If it is not a known issue I will try to do a little more testing.