Teams App Personal Tab - Viva Engange/Yammer conversation not loading

Question

Hello!

I have created an app in Teams (https://dev.teams.microsoft.com/) set up as a personal tab with content from a regular SharePoint site (MS365 learning pathway).

The issue is that conversations created with Yammer/Viva Engage web parts on the SharePoint site are not displayed in the application when I use it in the Teams desktop client. The conversations appear when I use the Teams client on the web.

From the desktop client:

From the web client:

This is the manifest ("*.yammer.com","*web.yammer.com" is added as valid domain):

{"$schema":"https://developer.microsoft.com/en-us/json-schemas/teams/v1.16/MicrosoftTeams.schema.json","version":"1.8.2","manifestVersion":"1.16","id":"05db8546-1517-4306-8dda-7278e8272226","packageName":"com.microsoft.teams.m365lp","name":{"short":"Get Started","full":"Getting Started with Microsoft 365"},"developer":{"name":"MS365 Learning pathway","mpnId":"","websiteUrl":"https://aka.ms/MicrosoftAdoption","privacyUrl":"https://microsoft.com/privacy","termsOfUseUrl":"https://aka.ms/m365lpdocs"},"description":{"short":"Training tools for Microsoft 365 applications","full":"Get started with on-demand training for Microsoft 365. Give feedback at [https://aka.ms/AdoptionFeedback"},"icons":{"outline":"outline.png","color":"color.png"},"accentColor":"#DC3E15","staticTabs":{"entityId":"201911011330","name":"Training Portal","contentUrl":"https://DOMAIN.sharepoint.com/_layouts/15/teamslogon.aspx?SPFX=true&dest=/sites/MS365LP?app=portals","websiteUrl":"https://DOMAIN.sharepoint.com/sites/MS365LP","scopes":["personal"]},{"entityId":"201911011335","name":"Teams Training","contentUrl":"https://DOMAIN.sharepoint.com/_layouts/15/teamslogon.aspx?SPFX=true&dest=/sites/MS365LP/SitePages/Get-started-with-Microsoft-Teams.aspx?app=portals","websiteUrl":"https://DOMAIN.sharepoint.com/sites/M365LPV3/SitePages/Get-started-with-Microsoft-Teams.aspx","scopes":["personal"]},{"entityId":"201911011340","name":"OneDrive Basics","contentUrl":"https://DOMAIN.sharepoint.com/_layouts/15/teamslogon.aspx?SPFX=true&dest=/sites/MS365LP/SitePages/Get-started-with-OneDrive.aspx?app=portals","websiteUrl":"https://DOMAIN.sharepoint.com/sites/M365LPV3/SitePages/Get-started-with-OneDrive.aspx","scopes":["personal"]},{"entityId":"69635e5d-42de-484a-bb5c-eba9b9e60d5b","name":"Search","contentUrl":"https://DOMAIN.sharepoint.com/_layouts/15/teamslogon.aspx?SPFX=true&dest=/sites/MS365LP/SitePages/Search.aspx?app=portals","websiteUrl":"https://DOMAIN.sharepoint.com/sites/MS365LP/SitePages/Search.aspx","scopes":["personal"]},{"entityId":"about","scopes":["personal"]}],"validDomains":["DOMAIN.sharepoint.com",".login.microsoftonline.com",".yammer.com","web.yammer.com",".sharepoint.com","*.sharepoint-df.com","spoppe-a.akamaihd.net","spoprod-a.akamaihd.net","resourceseng.blob.core.windows.net","msft.spoppe.com"],"webApplicationInfo":{"id":"00000003-0000-0ff1-ce00-000000000000","resource":"https://DOMAIN.sharepoint.com"},"authorization":{"permissions":{"orgWide":[],"resourceSpecific":[]}}}

Appreciate the help!