Title modified; seems there is a conflict between separators and collapsed Encryped areas; with reference to the example linked above:
without separator, if the area is encrypted and collapsed, a tab is created with the name of this area and the content of the following regions (outside the area itself) (not OK)
with separator but no title for him, a ttab "1" is created (OK)
with separator and a title for him, is not possible to open the executables (not OK)