Yes I have reproduced!! Also advised Arno.
As a quick workaround, until problem gets fixed, if for example your alias was 'logged-on-downloads' make your edits, change alias to say 'logged-on-downloads2' where I have added a 2 Save, which now completes. then change alias back to original and Save or Save and Close. All is now revised ok.
Apologies for this
Will move topic to bugs.