I use a custom light theme in obsidian (solarized). When I export a document as PDF the base theme changed to dark even thought the preference was still set on light. I had to change it to dark and then light to restore the light theme.
I am using Version 0.11.3 on Big Sur.
contact the theme author.
Sorry I should have tested a bit better and been clearer. I simplified it a bit.
Using the default settings with no custom theme, but with the Light base theme, when I export to pdf the theme for Obsidian switches to dark.
I can’t reproduce your problem. Can you post a screen recording with default css and no third party plugins?
Ah, so doing that - clean vault - I can’t reproduce either.
OK, I will attempt to isolate the cause and contact the plugin author.