Steps to replicate the issue

• Open: https://en.m.wikipedia.org/wiki/Edward_M._Burgess
• Look at 4,5β-Epoxycholest-1-en-3-one image

What happens?:
It is missing chemical bond paths or symbol

What should have happened instead?:
When you open image directly, it shows chemical bond (correct image) and small version should also show correct image.

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
It is wikipedia.

Other information (browser name/version, screenshots, etc.):
Safari 18.3 (macOS 15.3)

<- Incorrect
<- Correct (on full view)

Image URL - https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/EMB_Cholestenone_epoxide.svg/2880px-EMB_Cholestenone_epoxide.svg.png

^ Notice, it has svg.png. Hence, it is assumed that it is SVG-PNG image generator / converter issue.