Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Two close buttons (left & right) when 1 tab only Rated 4 out of 5 stars
When there is only one tab, this tab has two close buttons (left & right)
report about this to our forum
post more information, about tour operation system, theme, Firefox version. test if you see the same on clean profile with only Tabmix installed