It looks like Microsoft released some change with makes the O365 suite bar incorrect for Yammer. The other products (Office portal, SharePoint, OneNote, Sway, Outlook) in O365 works like expected.
Is this behaviour come maybe from this recently release?
These are the correct o365 suite bar from some other products:
This is the printscreen of the incorrect O365 suite bar in Yammer:
And this is the error in the console:
@Dreamsat Possibly a bug that you should report to MS through your Microsoft Support process.