Invoking quickfix in mapping on unknown property leads to vocabulary with incorrect prefix

[mchlrch]

Quickfix on ex.lastName without having a vocabulary ex declared yet.

map Employee from EMPLOYEE {
	...

	properties
		ex.lastName from ENAME;
}

In my case, a vocabulary with the prefix "ex." got created. The vocabulary name should be "ex" (without trailing dot)

vocabulary ex {
	prefix "ex." "http://ex.example.org/"

	properties
		lastName
}