I can't see PostScript files with Safari. The files are loaded into the browser but the window remains gray. It looks like it opens the builtin PDF preview window but nothing happens. Right-click gives a familiar menu but clicking on Open in Preview does nothing. The controls that usually appear when I move the pointer to the bottom center of the window do not appear.
If I download the PostScript file, then it opens fine in Preview.
For sample PostScript files, see https://people.sc.fsu.edu/~jburkardt/data/ps/ps.html, but it happens with all other files I've tried.
Is there a setting I'm missing? Or a fix?
I'm running Safari 15.3 (156220.127.116.11.8, 15612) in macOS 10.15.7 (19H1323). It works fine in Safari 14.1.2 in macOS 10.15.7 and in Safari 13.1.2 in macOS 10.13.6.