How to reproduce:
- click on the menu item called "E-Mail"
- click on the button "Markieren" (=mark) in the upper right corner.
Actual behaviour:
No subitems can be selected.
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
Solution:
If you can't use the function "Markieren" (=mark), it should be presented as inactive.
[Error prevention]