MacOS sometimes leaks traffic after system updates

it also leaks the audio of tabs before logging in.

Even though I had disabled all 'restore' applications features, macos sometimes decides to 'start' browsers BEFORE logging in after a restart AND those start auto-playing audio from whatever was paused before the reboot (or many days before).

Since then I went rather deep disabling that feature, but I never trusted it.

I can’t think of anything I want less from a laptop than it playing sound when I open it… and yet apple bring it to me as though it’s a feature.

That’s an unfair characterisation. It’s just restoring windows, some of which happen to be browser windows, which then load a website with auto-playing video or audio that (unsurprisingly) starts playing. No one is selling it as a feature to “play sound when waking up from sleep”. I bet that if you configured the browser to never auto-play, this wouldn’t happen.

To clarify, because commenters seem to be misunderstanding my point: I’m not defending the functionality, I think it’s wrong. My sole quarrel is with the characterisation that Apple is selling it as a feature, when they’re not. Let’s not ascribe wrong (or at best unknown) motivations to behaviours, as that makes is less likely they will be fixed.