Check all visible when checking an entity doesn't appear to work

[ramblingreece]

If I follow the steps below then the result is not what I expect.

Steps:

1. Tick the Check all visible when checking an entity in Attributes section
2. Select to only should custom attributes
3. Tick account entity
4. Note the customised attributes appear and they are ticked
5. Select all attributes
6. Note the attributes all appear again and are ticked

I would expect that all attributes appear again but only the previously ticked, custom, attributes are still ticked.

[rappen]

Can't repro this, see screencast: https://www.screencast.com/t/BKAc14ae4
Please provide more info.
Note that the automatic checking of attributes is additive, it only makes sure all visible attributes get checked, it does not uncheck any hidden checked attributes. Could that be the issue here?