Empty tags are not handled properly
Created originally on Bitbucket by mercurialeclipse (MercurialEclipse)
When repository contains empty tag, MercurialEclipse? cannot display any tag whatsoever. The list of tags is empty, both in "Team->Tags", "Team->Update To...->Tags" and "Team->Merge->Tags".
When that empty tag is manually removed from repository by inserting
0000000000000000000000000000000000000000
line at the end of .hgtags file (because "hg tags --remove" does not work with empty tags), everything starts working again.