Hello Rys,
thanks for the nice words - it looks like you are missing a decal there (a transparent texture that adds some detail to the window). This could be due to some reasons, which you will have to test one by one to identify:
1.) Possibly conflict with plugins - to identify disable the plugins and re-test.
2.) Possible effect of running a beta of X-Plane (like the current 11.30 beta)
3.) Another third-party program changing art controls in X-Plane.
4.) A side-effect of running the option "show vertices" in the IXEG preferences menu. This option should always be disabled, it is outdated and does not work well anymore with the current version of X-Plane.
Let me know how it goes!
Cheers, Jan
PS: I deleted your redundant post in the "Flight operations" forum.