I have a problem with thumbnails not displaying in CorelDraw X7... shell extensions

I recently installed CorelDraw X8 and ever since then my thumbnails have not shown in the windows explorer folders.

I have already uninstalled X8 and will probably upgrade when the price drops down a bit.

I would like to get my thumbnails back as it is slowing down my workflow not being able to see the files before I open them.

I have looked up other solutions for fixing the shell extensions but so far nothing has worked.
I have not selected "always show icons, never thumbnails" so that is not the problem.

Any solutions?