Man, I'm here 2 years from your original post facing the same issue, trying to find an explanation for that and failing miserably. I have the exact same situation: setting AccentColor as "tintColor" makes my SwiftUI app/preview crash when focusing on TextFields. That's VERY weird.

I don't know if this will work for everyone, but worked for me... I also have the arm64 added in the EXCLUDED_ARCHITECTURES because I need it due to a project dependency. Having it there make it possible to run my project in regular simulators (not the Rosetta ones), but apparently it doesn't work for the preview. So I did the following: In Product > Destination > Destination Architectures I selected "Show Both" At the Canvas tab, in the device selector now all the devices appear duplicated. If I select the ones nearer to the bottom (yeah, specifically in this selector the "(Rosetta)" text doesn't appear) the preview works: This allows me to use the preview and have the "arm64" added under the excluded archs.