
Hi @AJB ,
Did this problem only appear in PowerPoint? How about other applications with Outline Mode?
You can install the latest updates for PowerPoint and check the result.
I also suggest you completely uninstalling Office for Mac and check the result:
https://support.microsoft.com/en-us/office/troubleshoot-office-for-mac-issues-by-completely-uninstalling-before-you-reinstall-ec3aa66e-6a76-451f-9d35-cba2e14e94c0
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