I don't know how they occurred. I think I created those bookmarks and deleted the folders. I cannot click the greyed-out bookmarks. Nore, can't I use the minus symbol to the right.
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1$\begingroup$ If you hit the down arrow below minus there should be some type of cleanup option. $\endgroup$– Allen SimpsonJan 21 at 17:29
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1$\begingroup$ I had the same problem a while ago and, of course, I tried the minus button first... which does not work on dead entries... (of course, for some reason ;-) $\endgroup$– BlunderJan 21 at 17:36
1 Answer
Open the dropdown menu with the arrow button right below the minus button. There, select the Cleanup entry to remove the dead entries.