Inline Comments. Has no info in CommentCreationEvent

In my listener for CommentCreateEvent I try get some info about event.getComment();
I know that new Comment is Inline. But event.getComment().isInlineComment() return false.
Why?
Similary in that point i need more info about new Comment, but calls
getProperties().getStringProperty(“inline-comment”)
getProperties().getStringProperty(“inline-marker-ref”)
getProperties().getStringProperty(“inline-original-selection”)

returns null.
There are possibilities to get these attributes?