When I have a bunch of NT windows, the thumbnails extend off the screen so some windows cannot be selected. How do I overcome this? I guess it’s more of a Windows issue but it’s extremely annoying.
Could you explain deeper I.e. I don’t understand ‘what these thumbnails are/why/how they appear in the first place?’. They aren’t from the Taskbar NT icon hover. I’ve never seen them before (maybe Win 11 feature?)
It looks like your PC thinks that you have a bigger screen.
I use two screens (34 and 22 inch) when trading in NT8. But if I just use one, the part of the second screen is not visible anymore. I can bring everything back on just one screen by doing this:
Push ALT and SPACE at the same time while you have NT open.
With a little bit of luck all your charts will be resized to just the size of your screen.
You can also maximize the window from the thumbnail, then grab the top border of the window and center it that way.
Hmmm, I still don’t understand ‘what’ these ‘thumbnails’ are.
But anyhoo - when you say sometimes you may use 1 screen sometimes 2, if you mean the problem is that your Windows Desktop is ‘sizing’ for 2 screens but when you use only 1 you are unable to see everything on the second screen, then in my experience Windows takes care of this for you….. When you start Windows having last shutdown with a 2 screen Windows Desktop, then restart with only 1 screen Windows recognises this anomaly/mismatch at boot and asks if you want it to fit everything on your (2-screen based) Desktop onto the single screen it has identified.
Hope it helps (I’ve a feeling I’m still not understanding the problem properly so will shut up now….. 
Just trying to be helpful)
When I hover over the NT taskbar icon, windows shows me thumbnails of all the open NT windows.
I believe it’s a windows 11 feature. It’s the same with all applications. Just the poor window management of NT means I have a lot of windows open because you can’t have multiple charts per window.