User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.7.7) Gecko/20050414 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.7.7) Gecko/20050414 I have tried to make a Subfolder with the name "Spiele". Then I have moved some other Folders in thie new Folder. After that I habe decided to rename "Spiele" to "Spiele / Games". Mozilla Mail has made this without complaining but after this Mozilla had lost the access to this Folder. Renaming back to "Spiele" was not an option because Mozilla says now that a unsupported sign is in the new name. Mozilla Mail should forbid to make or rename a Subfolder with a "/" in its name. Reproducible: Always Steps to Reproduce: 1.Make a Subfolder 2.Rename it to "x / y" Actual Results: Now you have a bad mailsubfolder. Expected Results: Forbid to rename to "x / y". MozillaMail cannot work with Folders with "/" in its name.

*** This bug has been marked as a duplicate of 140212 ***