Feedback: 'attempt not found' error when viewing certain groups attempts

This issue only needs to be tested in 1 device. To test this issue you need a non-anonymous feedback activity with separate groups, and attempts done in each group. See the restricted comment to see an already configured feedback. Login with a user that belongs to 2 groups, can view feedback analysis but cannot view all participants. Open the feedback. Click "Submitted answers". Open any attempt in the selected group. Check that the data is loaded properly. Go back and select any other group.  Open any attempt in the other group. Check that the data is loaded properly.