Glyphs UI settings are: Always use Light mode.
But Text preview shows white text on grey background.
I would like to see Black on White.
When I use (Shift) Arrow up/down in the size field, plus enter, the preview size does not change.
The Text Preview is not affected by the Edit View settings.
We are working on an number of improvements to the Text Preview window, but those are still in the works.
In the meantime, you can use the following script to switch Text Preview to black on white even when using the dark system appearance:
Actually I wanted to drag out a tab to the 2nd screen (having a different resolution)