Need clarification about worklogAuthor (JQL)

Summary

Multiple users (A, B and C) log work on an issue (i.e ABC-1) and then, user A runs "worklogAuthor != A" on Issue Navigator.

Current Result

It returns all issues where other users have logged work including ABC-1 where user A has log worked too.

Is this the expected result?

Workaround

I think I found a workaround for anyone that finds this ticket in the future:

1. Define a helper filter called currentUserHasLoggedTime as follows :

   worklogAuthor = currentUser()
   

2. Then define your real filter like this :

   <<CONDITIONS_YOU_WANT_IN FILTER>> AND filter != "currentUserHasLoggedTime"
   

3. This does the normal set subtraction we would expect. So for example I created a filter to show unresolved and unassigned tickets that I have not yet worked on :

   resolution = Unresolved AND assignee in (EMPTY) AND filter != "currentUserHasLoggedTime"