I am executing rigctld 4.5.5 with command:
rigctld.exe --vfo -vvvvv -m 1028 -r COM9 -s 19200

When I send any command to my rig e.g. "rigctl.exe -m 2 -r 127.0.0.1:4532 f" when i am using VFO B it causes VFO B RX to toggle to VFO A and back to VFO B.

I discovered this because I was trying out Log4OM and I use VFO B for digital modes but connecting to hamlib from log4om while in vfo B caused my rig to toggle RX between VFO B and VFO A constantly.

I have attached a -vvvvv capture of rigctld and this command being sent to it.
trace.txt

It also occurs when starting rigctld when VFOB is already selected.

I suspect it has something to do with the VS command being sent.