A wonderful feature in Firefox of some tab extensions like Sideberry is that it lets you set actions for mouse events like double-clicking, long press, to name 2 that are very useful and you could do it on right or left click.
When you perform these actions with the mouse on a tab you can map them to some actions like refresh tab, duplicate tab, mute tab, set tab refresh time, etc etc.
Again sideberry extension is a good reference for this but it would be amazing for usability of tabs in Firefox to be able to map such mouse actions to tab actions.
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