Rehosted Microsoft Workflow Designer UI

问题:

I have recently created a rehosted Workflow Designer application and noticed that the UI looks outdated when compared with how it looks in Visual Studio. Does anyone know which could be the problem?

No matter what version of .NET I'm using (for example 4.6 or 4.7), the UI still doesn't update. I have also followed the next article to enable Workflow 4.5 features, but without any success on the UI side.

(WF4.5) Enabling new .Net framework 4.5 features in your rehosted designer application https://blogs.msdn.microsoft.com/tilovell/2012/06/04/wf4-5-enabling-new-net-framework-4-5-features-in-your-rehosted-designer-application

In the rehosted WF application it looks like this:

While in Visual Studio 2017 Community Edition if looks like this (notice the updated colours, icons and toolbox):

Any clues? Thanks!