FWIW, after updating some mods, it seems to exhibit the same slow behavior even when using the Metal backend.

Not sure it's the same issue, but I've been seeing very long load times on macOS after updating mods, and then restarting Factorio by clicking Confirm from the mods page.

If I manually quit Factorio, and then restart (from Steam), it then loads quite fast.
It's hard to say for sure, but it seems ...

I've also run into a similar issue on [2.0.15], and all of the recent 2.0.x versions.

Here is a screen capture showing the "black text" issue.
Pay attention to 0:15 and 0:41 in the video, where "Factory Planner" and then "Spidertron Automation" become black after the list updates.

Moving the ...