Missing eraser from Markup

This question was asked earlier this year with no response. I'm in Word on my iPad, and there used to be an Eraser tool on the Draw menu. Now there are just pen/pencil/highlighter options. So if I want to erase something I drew, I can't. How do I get it back?

I have a 6th generation iPad running iOS 15.5, and version 2.61 of Word.