Hi @Tai Saxty ,
Great to know that it works now and thanks for sharing the update here.
By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others.". and according to the scenario introduced here: Answering your own questions on Microsoft Q&A, I would make a brief summary of this thread:
[How do you stop Teams putting all users on hold when accessing documents?]
When we are in a teams meeting and sharing a screen, if you click on an action button in an app (like powerpoint / Excel etc) then teams puts each other on hold and tells you the other person did it when we didnt!
Issue stopped to occur since the update on Tuesday, so it looks like the latest update has cleared this issue.
You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks for your understanding!