Add an option to automatically collapse other tab groups when switching to a new one

[DeyanSlavov]

When using tab grouping in Firefox, all groups stay open at once. This leads to clutter and unnecessary memory use when switching between different contexts.

It would be very useful to have a native option that automatically closes or suspends tabs in other groups when a new tab group is opened.

Example use case:

• I have several tab groups for different projects — “Work,” “Research,” and “Personal.”

• When I open the “Work” group, I want Firefox to automatically collapse the other groups.

• This keeps my workspace clean and focused.

Benefits:

• Keeps the tab bar clean and organized

• Saves memory and CPU resources

• Helps focus by reducing distractions from other projects

[Jon]

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