You’re not stuck with the Microsoft automatic settings when inserting a new text box. Change the defaults to whatever you like for faster text box formatting in Office; Word, Excel, PowerPoint or Outlook.
When you Insert | Shape | Text Box , something like this probably appears. Thin black outline, no fill and text wrapping above text.
To change that, set the default text box you prefer then right-click and choose Set As Default Text Box. Our choices are Sketchy Scribble outline, light grey, thick line and Text Wrapping: Square.
Note: Insert | Text Box | Text Box does NOT use the text box defaults. That’s because those options are from a preset gallery called Building Blocks.
Once set, any new text box will start with your choices, not Microsoft’s.