I found a problem with the CW messages. Sometimes it would play incorrectly, missing elements and being generally undecipherable. Going out and back into message play at least temporarily fixed it. CAT control in WSJT-X and JTDX works fine if you select "Xiegu X6100". Although when it is first connecting, it seems to briefly select VFO B before settling on A. Probably to see what frequency is set in VFO B.
Gary
W9TD
Gary