>>basemi+(OP)
The official client is absolutely terrible. But, I've found a much better solution: I tell all my customers Microsoft Teams doesn't work for us and they'll have to pick something else.
Kudos for at least trying to address this, MS should hang their head in shame, this is not the hardest problem to solve these days. If we could do it in 1995 they should be able to do it 30 years later.