@brilliant-yaffle thanks you for reporting this issue! I need to test your case with having both project’s theme and parent theme in the same themes folder. I’ll get back to you soon.
I can confirm this is a bug and wiil be fixed in the next V24 release.
@sanguine-whale just updated to 24.0.1 which fixes the theme reference problem 
However I am still having an issue regarding images:
themes
common
components
styles.css
theme1
styles.css
theme.json
img
logo.png
In CSS I am referring to this image logo.png the following way:
.mydiv {
background-image: url("./img/logo.png")
}
After switching to Vaadin 24 this is not working anymore. The logo is not rendered. The image however is reachable on path.
With Vite activated it works. Will create a bug ticket in GitHub.
I’ve a different issue. I’m getting this error when trying V24
I think the starter needs to be corrected for this
