I write text, but want to delete it so use the eraser function. When I remove my apple pencil off the page, it goes back to write function (pen) automatically. Great feature

I write text. I now highlight the text using the highlighter function on GoodNotes. But it stays on the highlighter function so I have to click back to the pen function to continue writing.

Why can the highlighter function work like the eraser function in reverting back to pen mode automatically