PNG from ShareX do not always render previews

### Microsoft PowerToys version

0.98.1

### Installation method

GitHub

### Area(s) with issue?

File Explorer: Thumbnail preview

### Steps to reproduce

View filepicker from some website (like a new GH bug report)

This one above also failed to render a preview

### Example Screenshots that don't render previews (3 inside zip in case GH "optimises" them):

.

[Screenshots.zip](https://github.com/user-attachments/files/26844864/Screenshots.zip)

### ✔️ Expected Behavior

All my files thumbnails that are images in known formats show the image thumbnail

### ❌ Actual Behavior

Failed to display thumbnail

### Upload Bug Report ZIP-file

[PowerToysReport_2026-04-18-00-43-38.zip](https://github.com/user-attachments/files/26844906/PowerToysReport_2026-04-18-00-43-38.zip)

### Additional Information

_No response_

### Other Software

[ShareX](https://getsharex.com/) - not running at the time.

Start by reproducing the thumbnail failure in Windows File Explorer using the attached Screenshots.zip files and the reported file-picker scenario. Compare the affected PNGs with PNGs that do render and inspect the attached PowerToys bug report for relevant diagnostics. Done means the affected image thumbnails render reliably in the reported scenario.

Written by the indexing model from the issue text.