Yammer integration in modern pages requires login when using ie and edge

[Elsa Naumann]

I have noticed that if I use the OOTB Yammer feed option in modern pages there's a login issue when viewing with ie (ie11) and edge. Has anyone noticed this? Is there a known work-around? It seems to work fine in Chrome. I tested using the embed option instead, but since the embed you get from Yammer isn't an iframe, this is not an alternative. 

[#2]

I'm not seeing this problem in IE...What I'm seeing is that depending on the Group I want to add to the Yammer WebPart, there are some I cannot add there

[#3]

I get exactly the same problem. Using SSO enabled ADFS.