We're having issues with Yammer webpart on modern SharePoint site. We inserted 2 yammer webparts and configured to show 2 Yammer groups. On first load (fresh browser) it displays different issues:
We use "classic" display version of Yammer webpart.
@Aleš Šavli A little hard to follow without screenshots. Suggest you file a bug through Microsoft Support.
I know...for now we switched to "modern" design webpart and looks like it works OK. I will create some screenshots and will open an issue with MS.