I encounter two unpleasant situations with scrolling involved: 1) when the combobox items are displayed of the screen (in the position where the combobox would be if it were visible) and 2) when the combobox items are detached from the combobox.

Steps to reproduce 1):

• proceed to JSSE Configuration screen
• check 'Add jsse element'
• mouseclick 'Third party validation token' and reselect False
• without other clicking scroll by mousewheel down until combobox is off the screen
• press the DOWN arrow
• result: combobox items are displayed of the screen

Steps to reproduce 2):

• proceed to Datasource Setup screen
• mouseclick Datasource combobox adn select Datasource XA
• without other clicking scroll by mousewheel down
• press DOWN arrow and then UP arrow to select Datasource
• result: combobox items are now detached from its combobox button