Indeed, most likely this is the control inner error.
This is what I've discovered so far:
| DisplayOptions value | Toolbar | Topbar (?) | Hide/Show Button | Full View link |
|---|---|---|---|---|
| 0 [0000] | - | - | - | - |
| 1 [0001] | - | - | - | - |
| 2 [0010] | - | - | - | - |
| 3 [0011] | - | - | - | - |
| 4 [0100] | + | + | + | - |
| 5 [0101] | + | + | + | + |
| 6 [0110] | + | + | + | - |
| 7 [0111] | + | + | + | + |
| 8 [1000] | - | - | - | - |
| 9 [1001] | - | - | - | - |
| 10 [1010] | - | - | - | - |
| 11 [1011] | - | - | - | - |
| 12 [1100] | + | + | + | - |
| 13 [1101] | + | + | + | + |
| 14 [1110] | + | + | + | - |
| 15 [1111] | + | + | + | + |
So I am sure you can log the issue if you haven't done it yet.