UI toolkit in (default) editor light theme

Is there a trick to get this to work consistently? It seems to assume 'dark theme', because although it starts of with black labels, at some point they switch to a light grey. Most labels are impossible to read this way. I'd rather not be forced to use Unity in dark theme just for this toolkit to work properly...

 

Using Unity 2021.2.5f1, with the UI Toolkit that comes with it. I use Unity in Light Theme, and the font was like this right away. I switched to dark and back to light, and for a while the font was black, but at some random point it switched back to white. I was following this tutorial:

and he pulls in some things from experimental (to make graphs), but no idea if that is relevant. No specific steps to reproduce, no time to look at it right now either... I'm working in Dark Theme for the time being, will be switching back to light once I'm done with the tools I'm working on.

 

Having the same problem. Also hate how the new Unity Hub does the same thing.