Hi Anne,
Thank you for the reply and I am sorry for my delayed reply.
According to my latest test, I found that you are right, the “Worksheet Object>Open” and “Worksheet Object>Edit” shouldn’t act the same.
And I am sorry for my mistake. I tested with “Linked Worksheet Object>Open link” and “Linked Worksheet Object>Edit link” not “Worksheet Object>Open” and “Worksheet Object>Edit” yesterday.
The difference is that I selected Link to file yesterday. But your situation doesn’t need to select the option Link to file.

So, in this case, it’s first recommended to create a new Word document to see the result. If the issue doesn’t occur in the new document, it means that your current document may be corrupted. Given this situation, you may try to copy and paste the content form the old one to the new one.
If the issue also happens to the new created document, it means this issue should be related to your Word app. And you may try the following methods:
Method 1:
Please try to open Word in safe mode to troubleshoot whether the issue is caused by some add-ins. If you could open Office apps in safe mode, please try to temperately disable all add-ins referring to steps in this article: View, manage, and install add-ins in Office programs - Office Support (microsoft.com)
Method 2:
Please perform an Online Repair for Office.
If the above suggestions don’t help. Feel free to contact me.
And for a better understanding of your situation, may I confirm the following information?
- The build and version information of your Word? (File>Account.) Could you please share a screenshot on the Product information page and help mask your email address to protect your privacy? Like shown below:

- The build and version information of your Windows? (Click the Start menu > Type “winver” > and hit Enter.)
Best Regards,
May