A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi Carlesmur,
According to your description, I suggest you try the following steps:
1)Quit all running applications and start up your PowerPoint with Mac safe mode.
2)Insert a picture into PowerPoint presentation and change its format to check if the issue persists.
If the issue still occurs, please provide the following information to understand your situation so we can better assist you:
1)Your PowerPoint version(Go to PowerPoint>about PowerPoint) and Mac OS version and Mac system configuration. From the Apple menu in the corner of your screen, choose About This Mac. The version of your operating system appears beneath “macOS” or “OS X” in the window that opens. If you need to know the build, click the version.
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2)Please check if the issue occurs to all presentations?
Regards,
Virgil