MATEK F405 WING Serial Ports

Been using 3.9 for over a year and very happy with it.
Just downloaded 4.0 (latest) to play with and found that UART 6 is missing from the parameter list, only Serial 1 to 5 are listed.
Is this intentional?

try doing a search. I know it’s in Plane 4.0, but it was not under Standard or Advanced group. If you search the groups is ignored. That is using QGroundControl, APM2 and Mission Planner are a little different.

Yes, UART6 is available in PLANE 4.0 which makes me think that it is not a problem with Mission Planner but a bug in COPTER 4.