.tabbrowser-tab:not([pinned]) {min-width:0!important;max-width:100%!important;}
The first time I make a new tab in PM it devides the tabbrowser up evenly but when I close a tab it doesn't reset the single tab back to 100% width.
Then when I make another tab again it divides the tabbrowser in thirds as if the second one was never closed but with an obvious space in the middle where the second tab would have been.
Solution: unless you have tab open and close animations turned off in about:config>browser.tabs.animate the userChrome.css must read like so:
Code: Select all
.tabbrowser-tab[fadein]:not([pinned]) {min-width:0!important;max-width:100%!important;}
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.tabbrowser-tab:not([pinned]) {min-width:0!important;max-width:100%!important;}