Distorted png thumbnail on export - Photoshop CC

[SquireAus]

I am composing images on Photoshop CC (saving them as .psd then exporting via Export As in .png) and I keep running into problems with my exports png thumbnails, mostly in the sense it looks completely wrong.

The image I attached shows the .psd thumb nail to be working fine, while the exported png one to be botched every single time. I don't know what is causing this.

Windows 10
Photoshop CC 2020

[Omar.Fathy]

It's a windows explorer problem. 
These links may help you:
https://www.howtogeek.com/662613/how-to-fix-problems-with-thumbnails-on-windows-10/
https://allthings.how/10-ways-to-fix-image-and-video-thumbnails-not-showing-problem-on-windows-10/

What is your GPU Specifications?

[SquireAus]

My GPU is a Nvidia RTX 3080 TI with 12 GBs of VRAM. I also tried the links you give me but when I disable transparency in the export settings, the thumbnail comes out fine.

[Bojan Živković]

Is your problem black background instead of transparent? It happenned to me and when copying/pasting images directly from browser. Photoshop is not quilty. You can use Bridge to browse and accuratelly preview images.

[SquireAus]

Black background with garbled layers, sometimes white boxes hovering over black backgrounds, colours flying everywhere.

These garbled thumbnails always happen when the image is exported with a transparent background.

In this image, 1 is without a transparent background and 2 is with a transparent background.

[Erickson33725980vph3]

Getting the same problem rn on Photoshop CC 2021. Did you found any solution to your problem?