LyX ⇒ TikZ previews affected by LyX UI style?

[symptom-heap-chuck]

It appears that TikZ previews are affected by the LyX user interface style?!

When I have a regular white background and black text UI (preferences | look and feel | default UI style), I can enter LyX code wrapped by preview and have the preview show up as intended. HOWEVER, if I switch to a dark mode style (in my case, Adwaita-Dark), the TikZ previews change color and are so light they barely show up on my monitor.

I attached my LyX file for reference:

preview-not-working.lyx

(3.07 KiB) Downloaded 35114 times

Here is what preview mode looks like when I have dark mode on:

Screenshot From 2025-12-10 18-59-01.png (38.14 KiB) Viewed 1139 times

And this is what it looks like when the style is not dark mode:

Screenshot From 2025-12-10 18-59-37.png (50.13 KiB) Viewed 1139 times

Ideally this shows me the diagram properly when I'm in dark mode. I don't care if it is white-on-black or black-on-white. How to make this work?