Changes in default commands in VS 2022

[RobertvanderHulst]

We have noticed that in recent builds of VS 2022 several commands that were enabled by default, such as "Insert Snippet", "Format Document" etc. are no longer enabled.
We have to explicitly enable these for our custom language to support them.
Furthermore, we also noticed that our LanguageService object, that is used for example to show "Auto" expressions in the debugger, is no longer automatically used by VS.
Does anybody know if there is a document somewhere that describes these changes, why they were made, and what the recommended way is to enable them for a custom language?

[RobertvanderHulst]

To answer my own question:
Apparently something has changed in the latest builds, which causes a managed Language Service not to properly work anymore.
In the Roslyn codebase they are now createing a ComAggregate for the Language Service. See this commit
dotnet/roslyn@62f61f8