On Live 11, there is no issue at all. Same issue withtout Windows 10 theme tweak or with other Reaper themes. SAme thing an an another Windows 10 with Reaper @stock.
Randomly, for exemple Jup-8 V4 VST2 or Solina V2 display a blank screen.
If I click on the part of the plug, we can see a little window...
Your project seems to load without issues here. That is, I currently don't have Jup-8 V4 installed, but I do see Solina V2's GUI just fine. Also, all of my own projects with VOX Continental V2, Solina V2, Farfisa V, DX7 V, and B-3 V2 load just fine.