I have just found out you can use a NSUserDefaults key to restore the original, not awful, alert dialogs to macOS. I know many people here prefer the older systems, so I thought I’d share!
Hmm - is this really just for the specific app?
You probably don’t want to (secretly) set a global user preference within your app, that has an effect on all other apps…
…but it’s perfectly fine to do that in Terminal.app - if you want to see the dialogs like this again on your machine, for all applications.
Yes, just your app. Using the method from post 2 you set the key for your app only because you’re not setting it globally.
The -g parameter in the command line from the first post is what sets it globally. You could alter the command to apply this to just a specific app, I believe like this: defaults write com.xojo.xojo NSAlertMetricsGatheringEnabled -bool false
Trouble also with the defaults write stuff is that Apple can just drop them in a new OS version without so much as a by-your-leave. So, f’rinstance, these: