Insider Preview Missing Mail icon in Calendar and Calendar icon in Mail

[Windows Central Question]

WP 10 10536.1004 with configuration update installed. I can't get to Calendar from Outlook Mail nor Mail from Calendar. The icons are missing when pressing the ...

 

[charlatan1978]

I believe this is normal after a recent update to both the Mail and Calendar apps.

 

[charlatan1978]

It's mentioned in this post.
Hands-on with Outlook Mail and Calendar's new dark theme for Windows 10 | Windows Central