I don’t know if this is intentional or not but on the left menu you need to click precisely on the small “+” sprite to expand the sub-menus. When I first started playing, I did not immediately notice as I was clicking on the grey area around the “+” and it wouldn’t expand the sub-menus which I found frustrating then when I realized you had to click on the tiny sprite it became more of an annoyance since in larger resolution the sprite is small and hard to click, well at least for me …
Edit :
Just found out the “Facilities” and “Advanced Manufacturing” folders are not affected by this bug