Can no longer add People to a chat and include chat history in Microsoft Teams?

terrenceNokia  As ususal in these microsoft support pages, they provide no answer.  I am experiencing the same issue here, but the feature is intermittent across the board.  Some can share, others not, like me.  I have looked throughout the settings and cannot find any relatable setting to toggle or set.  The past chat history setting is a necessary feature for the business industry and the excuse that Microsoft is afraid of the "uncle Bob" comments being shared is just simply ridiculous.   I myself would like an answer, but it seems Microsoft is too busy providing features and then taking them away from their software without any notice or reasonable explaination.