I have a friend who suffered from the same lines with his Intel iGPU. And B93 is old.

Do you have the same issue with the latest build of VP 22 (239 came out last week)?

I see you are using the Intel 520 GPU. The 530 seems to be the minimum recommended:
https://www.vegascreativesoftware.com/us/product-comparison/#c286447

If you turn off the GPU (change to none in preferences/video) is the glitch still there?

I'd try a newer Intel display driver. https://www.intel.com/content/www/us/en/support/intel-driver-support-assistant.html

Others reported similar issues in the past and new drivers helped a few of them:

https://www.vegascreativesoftware.info/us/forum/rendering-problem-in-vegas-pro-20-when-using-color-grading--137383/
https://www.vegascreativesoftware.info/us/forum/diagonal-strip-of-cubes-when-editing-colors--142850/
https://www.vegascreativesoftware.info/us/forum/diagonal-flickering-line-when-using-color-grading--141101/

sorry for the late update...as I saw the post in the earlier forum it's seem Magix Vegas teams didnt bother to fix this issues.and when I saw the threads in the forum you've linked The user said..this problem persist since Vegas 20? now it's version 22? I uninstall the intel graphics driver didnt work either... yup when I turn it off GPU acceleration there's no problem persist either this just pure vegas pro problem bug that carry on to Vegas 22