UPDATE: Issue fixed with new json theme. However, mattlee there is a problem with the button fill. The fill doesn't actually fill the whole of the last button and is a visual glitch. See the screensh...
I am facing the same issue.
A published report does not keep the format selected on Desktop.
In my case, this affects to the following:
Call values
Apply settings to:
> All
> REST
> Press
Format applied to Hover and Selected seems to remain the same.