**How to reproduce**:
1. click on the menu item called "E-Mail"
2. click on the button "Markieren" (=mark) in the upper right corner.
**Actual behaviour:**
No subitems can be selected.
{F2417426}
**Expected behaviour: **
The graphic presentation (dark and bold) of the button "Markieren" (=mark) indicates , that the function "Markieren" (=mark) is in an active status.
Hence you expect that by clicking on the button "Markieren" (=mark) you are able to select further options, which does not work --> provokes errors
**Mögliche Lösung:**
Das Symbol für "Markieren" auch tatsächlich als inaktiv darstellen, wenn es noch nicht eingesetzt werden kann
[Error prevention]