Hello,
My name is Charles Kenyon and I am an Independent Advisor in this forum . This forum is a user-to-user support forum. I am a fellow user with decades of experience using Microsoft Word. I have written extensively on using Word and have help articles on the Microsoft site.
This looks like text "Shading."
Select the text and using the Borders and Shading dialog, go to the Shading Tab and make sure it says no shading.
You can reach this dialog by clicking on the Borders icon on the Paragraph group on the Home Tab and selecting Borders and Shading at the bottom of the drop-down. Then click on he Shading tab.
If this is not the problem, If you want, save a sample document with the problem on OneDrive or Dropbox and paste a view link here. Here is more on why and how to post such a document so I or others here can help you. https://answers.microsoft.com/en-us/msoffice/fo...
I hope this information helps.
Please let me know if you have any more questions or require further help.
You can ask for more help by replying to this post (Reply button below).
Stay well
