Deep Linking to Embedded MS Teams App - subEntityId Parameter Issues

[nodonnell]

Hi everyone,

Sorry for the novel below.  I have a very strange intermittent issue that I'm hoping someone can shed some light on or help me debug.  I'm a newbie to PowerApps and I'm just putting the finishing touches on my first PowerApp.  Big thanks to @Shanescows and @aprildunnam for their fantastic videos which got me to where I am. 

The final touch has to do with deep linking.  I have embedded my app in a MS Teams channel within its own tab and have created a process to post messages to the Teams channel with a deep link to a specific record (dynamically using the record ID).  I followed April's video on how to create a deep link to a channel and it works... sometimes... other times it doesn't.  It's so bizarre. 

When I click the link and it works, it will go the record I want and then it seems to get stuck.  Any time I navigate away from the channel and back to the embedded PowerApp (without following the deep link), it still goes to the record that the deep link referenced.  Nothing I do, short of restarting Teams, will reset it.  I've tried resetting the variable I'm assigning the subEntityId parameter to but it doesn't do anything.  Other times I'll click the deep link and it just takes me to main screen of the embedded PowerApp instead of the record in the deep link.  It seems as if subEntityId is not being passed or read on a consistent basis.  I have a label outputting the subEntityId variable and it shows blank when this happens.  Any ideas?  I'm pulling my hair out over here!  I have no issues whatsoever when I deep link to a web URL.

Here is the pertinent code (masked the IDs):

App Start:

Set (varAdvisoryTeams,Param("subEntityId"));

If(!IsBlank(varAdvisoryTeams),Set(varRecord, LookUp('SP List', ID = Value(varAdvisoryTeams)));Navigate(DetailsScreen));

Deep Link Code:

MicrosoftTeams.PostMessageToChannelV3(
"4388f68b-f315-46be-9e0b-xxxxxxxxxxxx",
"19:f0fb90c2b2d94d69a4bdbxxxxxxxxxxx@thread.skype",
{
content: "<p style=""color:red;"">New Advisory Requires Approval - ID:" & varRecord.ID & "</p><br><a href='https://teams.microsoft.com/l/entity/49987f3a-b906-4a62-a39e-a838424a1794/_djb2_msteams_prefix_20100..." & varRecord.ID & "%2C%22channelId%22%3A%2219%3Af0fb90c2b2d94d69a4bdbxxxxxxxxxx%40thread.skype%22%7D&groupId=4388f68b-f315-46be-9e0b-xxxxxxxxxx&tenantId=86032bd5-b422-4204-87af-xxxxxxxxxxxx'>Click here to view the advisory</a>",
contentType: "html"
}
)

[nodonnell]

UPDATE:

For anyone who might come across this same issue in the future, it appears to be a bug affecting my current team within MS Teams.  In my steps to troubleshoot this issue, I've created a new Team within our MS Teams environment.  Within that new team, I created a new channel and embedded my Power App into a tab within the new channel.  I can now deep link to this new team/channel without any issue whatsoever.  It works consistently every time and the subEntityId value clears itself after each use, as expected.

I now have a viable workaround but it would be great if I could get this working in my current team as intended.  Can someone point in the right direction for reporting a bug to Microsoft regarding Power Apps/Teams integration?  I'd like to get this reported for a fix.