Unable to left click many UI elements

Starting on October 11th, 2019, I have been unable to click on many of my UI elements in game. For instance, I am unable to click the UNDOCK button in a station. Additionally, I cannot click the minimize or close buttons on the game window or on the UI windows.
I CAN, however, drag windows, right click, drag & select, and click SOME elements and windows.

What’s your operating system ?