The Tab-Wizard doesn't work correctly

Initial situation:
--------------------------------------------------------------
Create a new XDEV 5 project with one XdevWindow
> on the XdevWindow create three XdevTextFields
> use the Tab-Wizard to re-allocate the tab index for the XdevTextFields

• TextField1 -> Tab-Index: 1

• TextField2 -> Tab-Index: 2

• TextField3 -> Tab-Index: -1 (excluded from the Tab-Cycle)

> save the changes and close the XdevWindow

--------------------------------------------------------------

Actual behavior:
--------------------------------------------------------------
After reopening the created XdevWindow with the UI-Builder, the tab index has been changed to:

• TextField1 -> Tab-Index: 1

• TextField2 -> Tab-Index: 2

• TextField3 -> Tab-Index: 3

--------------------------------------------------------------

Expected behaviour:
--------------------------------------------------------------
The Tab Wizard works as expected.

--------------------------------------------------------------

Comment:
--------------------------------------------------------------
Example project:
https://bitbucket.xdevwebservices.com/projects/BUG/repos/xdev-3019/
--------------------------------------------------------------