Bug in new MS Office release
We have reported the issue to Microsoft who have confirmed the bug. They elaborate that a newer version of Microsoft Office cannot fix the issue, but upgrading your Windows 10 and Office versions to the latest versions will solve the issue.
- Windows 10 Build +1803
- Office Build +16.0.9330.1000
If upgrading your Windows is not possible, an immediate fix is to change your "User Interface options" in Office (per application) to "Optimize for compatibility". See screenshot below.
The above solution can be applied by adding the below Registry Entry via GPO: