There are issues when edit conflicts are occurring for claims:
- User A edits a claim, User B edits the same claim without refreshing the page before, an error is shown saying "Exception Caught: Can only add \Wikibase\Claim implementing objects to Wikibase\Claims." but it should report an edit conflict instead.
- User A edits a claim, User B edits the same claim but clicks on save without actually changing the claim. In that case the claim will be overwritten by User B without notice but an edit conflict should be detected instead.