If you still have Windowizer4, it still works if you install it in SU2020.

Not exactly the same and not perfect but this texture might do...

Do a search for ... "Vertical open joint batten cladding". It may be what you want. Ebony Finish or Black Painted.
An example...https://lifespacecabins.co.uk/smallcabin/

Profile Updated, the issue was on SU Pro 2020.

Gottit! F9. -Hovering over the ThruPaint toolbar brought up a few options...
Thanks guys.

I don't have a shortcut key assigned to ThruPaint, the 'B' is the native shortcut for Paint Bucket and if I delete an reassign it, the problem remains.

Try https://sites.google.com/site/sugeodesic/home

Thanks for the tip, but it's not that. It's not selected (didn't even know this menu existed!). I had the issue a few years ago also and I managed to sort it out somehow but I can't remember how, other than it was a simple fix.

Returning to SU after a long absence I developed some brain fog! I have an issue when I select the native Paint Bucket tool by clicking the icon (or pressing 'B'), up pops the ThruPaint plugin and I can't get the native eyedropper tool anymore by pressing ALT. I don't want the plugin just the native paint bucket function. Anyone have a solution?

How about a monitor wall mount -single or dual, -they can be folded and placed against the wall & can swivel, 360° rotate, allowing you to adjust the angle as you want. With swiveling arms and freely adjusting height, you can ensure optimal viewing is easy to find the perfect spot. They usually have cable management ducting which prevents cables from being scattered and tangled, making your workspace more tidy and organized!