[Locked as a duplicate of https://support.mozilla.org/en-US/questions/1362480. Please follow up there, thanks.]
I delete this bookmark in the browser, but after ending and newstart it#s always in the bookmark-line.
由 Chris Ilias 於 修改
Are you sure that is not an add-on?
Type about:addons<enter> in the address box to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)
In the Add-ons Manager, on the left, select Extensions. Make sure you know what each one is and what it does.