Prompt before closing firefox with pinned tabs

[tpko]

Hi,

My issue is that I always tend to close windows in which I'm uploading stuff - for instance youtube. I then have to go through the process all over again. What I would think firefox could benefit from is giving a warning/prompt when user is trying to close a pinned tab even when He's closing the whole window.

[Jon]

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[Jon]

Similar idea here: Firefox - Not to accidentally close entire browser