When creating a new folder with F7 a dialog pops up which lets you enter the folder name. 

After writing a first character it is not possible to delete all characters again. The last character is always not deletable. 

Sure, a folder name should contain at least one character, but when is mispelled a folder i want to be able to remove the old name completely before entering the new one. Instead of preventing the user to delete the last char one may simply disable the OK button.

Reproducible: Always