That is correct. All Nvidia drivers post 380 release result in disappearing/flickering titlebar of PaleMoon while using WB. Yes, win10 (I provide detailed infromation in the thread I linked to above).
I'll be very grateful for looking into this!
Edit: I just double checked the link and it's not working. I am quite ok with using different forums and providing link but here it just directs me to this very thread. The thread I want to link to is here in WindowBlinds section and its title is "Nvidia driver 380*, WB and PaleMoon browser titlebar."