Hi Nikita,
Please first check if you are using the same version of the Excel 2016 for Mac application as your colleague. Meanwhile, check whether you have the latest version of the Excel 2016 for Mac application. If no, update the version of it to the latest version to see and let us know the result.
Moreover, upload a full screenshot of the page showing the version information of the Excel 2016 for Mac application you are using. You can access the page via Excel>About Excel.
Note: Remove any private information before uploading the screenshots.
Thanks,
Cliff