Borate, I sent a link via DM.
I downloaded and installed the link you provided, but it did not solve the problem. The problem happens in the clip preview and also the timeline. I exported the project with no modifications as a mp4 file. The resulting exported file looks fine, no problem. Furthermore, when I imported the output file back into the project as a clip, there was no problem. It looks fine.
Even though I already have three other video editing programs (not including the ones that came with Windows), I decided to purchase VideoPad because I thought it would be compatible with NCH Debut, which I am using to create the clips. I am disappointed to see that is not the case. After testing several video formats, I selected mp4 because it maintains a good quality image, while keeping a relatively small file size. I hope someone can figure this out.
My system specs:
Dell XPS 8700
Processor Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz 3.40 GHz
Installed RAM 24.0 GB
214 GB free space on the c:\ drive
AMD Radeon 7500 series PCIe board
One thing I just noticed, if it helps. I said there are two superimposed images, one of them stretched vertically. The normal sized image is green, and the stretched image is purple.