TeXstudio 3.0.0 equations do not preview, even though I have the option enabled

This is similar to the issue Roland Salz had, but I have already followed the advice in that post, and toggled that setting, and restarted, but it doesn’t seem to change anything.

It seems like me that it’s a bug in 3.0.0, since with the version (2.12.22) I had on my old laptop, it worked fine.
Is this a known issue, or am I missing something?