Hi Tinggi,
Thanks for sharing your experience with us. Based on your description, you have issue when recording slide show in PowerPoint for Mac.
Firstly we'd like to suggest you ensure you are using the latest version of Office. The current latest version is 16.22(190211). If you are not using this version, you can install
the latest Microsoft AutoUpdate tool and click Help>Check for Updates to install the latest version.
Besides, it seems you get the issue after changing a couple slides in the presentation, you may copy all slides in the presentation, create a new presentation, paste all slides in the new presentation
and start to record slide show again with the steps in this article Record a slide show with narration and slide timings, then check the outcome.
If issue persists, please let us know the following information to troubleshoot the issue:
1.You Mac version.
2.Does the issue occur in a specific presentation? If you do a simple test for slide show recording in other presentations, do you still have the issue?
3.Please record a reproduce video which can describe how the issue happens from your side. It would be helpful for us to know the details of the issue.
If your video contains any privacy or confidential info that is unable to share in public, you can directly share with us via
PM to proceed. Appreciate your time and effort.
Best Regards,
Tina