Cannot Edit/Delete an user after editing another user's profile without page refresh

STEPS TO REPRODUCE

Preconditions: At least one user is already created.

1. Login as Admin
2. Go to Drawer > Administer Wiki > Users & Rights > Users
3. Click 'Edit' for Admin
4. Click 'Cancel'
5. Click 'Create user'
6. Fill the username and password for an user (e.g. U1)
7. Click 'Create'
8. Click 'Edit' for U1
9. Click 'Delete' for U1
10. Click 'Delete' for other users

EXPECTED RESULTS

The new created user's (U1) profile cand be edited and deleted properly (using the new modal).

ACTUAL RESULTS

When creating an user after previously edited Admin's profile, the respective user's profile cannot be edited (nothing happens when clicked 'Edit'). Also, when click 'Delete' for U1, the modal is not loaded, a simple confirmation box is displayed instead. But when click 'Delete' for other (existing) users, both the modal and the simple confirmation box are displayed. When the page is refreshed, everything goes back to normal.

However, when creating the user U1 after previously edited another (existing) user's profile (not Admin, at Step 3), the U1's profile cannot be edited nor deleted (nothing happens when clicked 'Edit' and 'Delete') until page refresh.