Immediately following adding an element to the diagram from the modeling palette
using the keyboard (Ctrl-Enter), the properties window does not show the
properties for the newly added element. Then, using the keyboard (Tab/Shift-Tab)
to traverse to elements on the diagram, the properties window is not also
displaying the properties for the selected element, even though doing a
Shift-F10 and select Properties from the context menu would only display the
properties for the previous element. So, editing properties for the element is
not possible, eg, changing element names for State Diagram elements like Choice
Pseudo State, Shallow History State, or similar type of elements, etc. 

Repro steps:
- create a state diagram
- create a few elements 
- Ctrl-Shift-8 to focus on the Modeling Palette
- press Tab and use Up/Down arrow to select elements from the palette
- press Ctrl-Enter to add selected element to the diagram
Result: properties editor is now displaying properties for previously selected
element
- Tab to different element(s)
Result: different element is selected on the diagram but not on properties window

Workaround: 
- while the element is selected on the diagram
- press Ctrl-Shift-5 to select the element on the project tree, now the
properties is displaying the properties for the selected element
- Ctrl-Shift-7 to focus on the properties editor
- now editing is possible on the properties editor for the selected element