CKEditor - put a line break through br instead of p (by default). And now if I write and then delete the text, there are a lot of double quotes. What is it?

Question

CKEditor

Hello. Added the following line to config: "config.enterMode = CKEDITOR.ENTER_BR;" And now when I write in CKEditor, I do a line break, instead of creating a new p, I write br. This is exactly what I need. But the problem is that if I remove the text I wrote, there are a lot of double quotes left in developer mode. What is it? How bad is that? How to fix it? I am attaching a screenshot.