Hi @Oliver Saunders ,
Does this issue persist all the time?
Does anyone else have the same issue in your organization?
Have you tried to use PowerPoint sharing on Windows desktop client?
To exclude the client issue, we firstly recommend you login Teams web client to see if this issue can be reproduced. If there is no issue in web client, please try to clean your client cache file and restart your Teams to see if it can be fixed.
It should be noted that when presenter share PPT with someone, in participant view they cannot see cursor. This is default by design.
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