I have few navigation widget buttons as well as normal buttons on mashup. (Navigation widget launches pop-ups on click)
When pop get launch from navigation widget buttons normal buttons turns into gray color on mashup, and other navigation widget buttons remain blue.
So it looks wired mashup having few buttons in blue and gray when pup-up launch.
Try changing the DisabledStyle button formatting to DefaultButtonStyle , in the Button properties.
Retrieving data ...