Custom Dialog Theme Issue

[sarat12]

What steps will reproduce this issue?

I have an app with settings custom dialog. I'd like to be able to change the app theme (Light/Dark) on the fly (using settings dialog). Also I want my dialog to change the theme as well. Everything works as expected when I'm doing it for the first time, but after I close the dialog and then trying to do that again - theme change only influenses on the window, not on dialog.

So steps to reproduce the issue:

• run the app (https://github.com/sarat12/CustomDialogThemeIssue.git);
• press "DIALOG" button;
• play with radioButtons (make sure all is good);
• press "Close Me!" button;
• press "DIALOG" button again;
• play with radioButtons again (and see that dialog is not reacting on theme change).

Expected outcome

I'd like to be able to change the theme of the window including custom dialog as many times as I want (not only once).

Repo

Very simple WPF project to reproduce the issue:

https://github.com/sarat12/CustomDialogThemeIssue.git

Environment

• MahApps.Metro v1.5.0
• Windows 10 x64
• Visual Studio 2017
• .NET Framework 4.5