SFSafariApplication.dispatchMessage() switches Safari to foreground?

App & System Services Core OS
normal OP
Created Dec ’21
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I'm developing a Safari web extension for macOS that calls SFSafariApplication.dispatchMessage() (Swift) to communicate with background.js and the popup. However, I noticed that the method forcefully switches Safari to foreground. It seems it happens after calling browser.runtime.sendNativeMessage(''); in JavaScript.

Is there a way to avoid that behavior? Or perhaps I'm misunderstanding something?

This is a sample project and its video (Safari is switched to foreground every 3 seconds.):

  • Sample project: https://www.dropbox.com/s/vs7h128ef1ji34q/ForcefulForegroundIssuePlayground.zip?dl=0
  • Video: https://www.dropbox.com/s/7pjbh1rihnh068l/Screen%20Recording%202021-12-23%20at%205.42.44%20pm.mov?dl=0

By the way, I already submitted a feedback for this as FB9804951 about 2 weeks ago but no response from Apple so far and I don't know if Apple will take any action for that or not even after the new year so I decided to ask here as well.

Replies  2
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Engineer OP
Apple
Jan ’22

Thanks for filing this!

What are you trying to use this messaging for so that you don't want Safari to come to the foreground?

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normal OP
Jun ’22

Just an update; I've just chatted with an Apple developer (Timothy Hatcher) in the WWDC's lab. According to him, it's not solved yet, but at least Apple recognizes it's a bug. A certain famous company also sent the same feedback before mine, so my FB9804951 is internally marked as duplicated. I hope it'll be fixed soon. Thanks Timothy. 🙂

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SFSafariApplication.dispatchMessage() switches Safari to foreground?
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