Storing documents locally or in cloud services like OneDrive from within Microsoft Teams
A minor update. I still can't download via safari, but I seem to be able to download via the Teams app, navigating to the Chat of the meeting and clicking on the transcript icon, which opens a Teams window with the video and transcript (much like what it looks like in Safari/Chrome) but I can click on Download and select the format of the transcript successfully. So, perhaps this is something internal that they are working on and perhaps also a Safari security feature that is blocking the download.
Here is the version of teams that I'm on. Version 25093.2105.3614.8220