[resolved] Post / comment previews not working

Today I noticed that when I go to make a comment or post, the preview of what I’m typing does not appear.

I have the preview space expanded, and it just shows all black (in dark mode).

The “hide preview” button still works, to shrink away the preview space or expand it again, but no preview is shown in either configuration. There’s just a blank area where the preview should be.

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Edit: The previews are working again. Not sure what changed. I had already tried refreshing the page with no effect. I did not refresh the page this time.