Hi Matěj. On the wikicite-discuss list, User:Rdmpage has reported a difficulty with QuickStatements when trying to create a statement that has value <somevalue>, and in the same edit add some qualifiers to the statement: https://groups.google.com/a/wikimedia.org/forum/#!topic/wikicite-discuss/IDh-ElPx6DQ (message at 18:44)
He reports that he can add the <somevalue> value, but not qualifiers at the same time.
Since you made the nice addition to QS to allow edits with value <somevalue>, I thought I'd ping you to see if there's any reason you can see that this isn't working.
Thanks, James.