Thank you for the detailed feedback

This has been fixed in version 1.1.0. PitchShifter now includes an On/Off button, and activation is isolated to the current tab. Enabling it on Spotify will no longer override YouTube or media controls in other tabs.

Turning it off also restores the tab’s original playback speed and pitch-preservation settings. Your chosen values are still remembered as presets, but every new or reloaded tab starts with the extension disabled.

Thanks again for reporting this and helping improve the extension! :) ❤️