Minimize vertical tabs when not hovered by cursor.

[mentallykim]

What: Vertical tabs can take less space on the top of my browser, which makes it a little comfortable, but please add a feature that can hide the vertical tabs when not being used or hovered by the mouse cursor. 

Why: I want an uninterrupted and immersive experience of Firefox using the vertical tab.

For example, Brave browser has an option to do this feature.

[Jon]

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[JigzCodes]

Surprised this isn't already a feature in firefox, you can already minimize vertical tabs to just favicons, but it's not efficient since you have to hover over each icon to see it's header, as opposed to seeing all headers on hover. Especially when you have multiple tabs with the same favicon.