Currently building out a bot in Bot Framework Composer and deploying it on the Teams client. I suddenly am having issues since last week where my custom telemetry ("telemetry - track action") is no longer showing any results in Application Insights. The few that did also only save one property and not the others (see image below). Other events (LUIS, bot message received, etc) all show up in real time and correctly.
This is a known bug in Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime version greater than 4.15.0
There is a pull request for this issue and most likely will be fixed in next release of botbuilder-dotnet
PR https://github.com/microsoft/botbuilder-dotnet/pull/6391
A workaround for now is to downgrade the Adaptive.Runtime package to 4.14.0
To learn how to downgrade packages in .NET, here is doc to Install and manage packages in Visual Studio using the NuGet Package Manager