Open panel not opening in Catalina

John Brownie

I have a weird situation where I show an open panel via beginSheetModalForWindow:completionHandler:. The problem is that it works OK with Mojave (and before, I assume), but it doesn't work in Catalina (10.15.1). What's weird is that, if I step through in the debugger, it appears, but if I let it continue through, it doesn't appear. My app is not sandboxed, so it shouldn't be anything to do with that.

Any ideas? I'm stumped at the moment.

John Brownie
Mussau-Emira language, New Ireland Province, Papua New Guinea
Kouvola, Finland

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