When I install a system, there is no visual difference, when there should be (see attached screenshot). I tried this on another system module I found later and it produced the same results. I also tried every permutation with the two system modules, and each gave the same result.
After exiting back to the main menu and loading my game, the problem went away, so I don't have a screenshot or logs.
Version: Beta 0.20.2 r13547
Specs: Windows 10, Intel i5-6600K, NVIDIA GTX 1070
Edit: After playing more, I find that sometimes during a session, only certain system modules will be consistently invisible, while others will appear properly.