This site is being deprecated.
Please see the official X‑Plane Support page for help.
XP 11 thru all its beta versions works great in High Sierra except for 11.10r1. There is a cursor problem in XP 10 but that is an Apple problem at this late time.
If you have a specific problem using XP 11, state exactly what the problem is and you might get some help.
I am not with Laminar Research and I am not a Mac user
Mac has changed their operating system after Xplane 11 was released. and you have obviously decided to upgrade. There are others Mac users who are experiencing the same problem. Scroll back through previous questions in this same forum.
A recent answer I saw was that Mac needs to talk/contact Laminar Research to solve the problem. Until they do LR can't assist or solve your problem as I presume it is all about software coding.
This site is no longer being actively maintained.