When pasting text with styling to the document the text styling is not removed. This will lead to the line not saving correctly and possibly the wole line breaking.
The pasted data will not be added to window.internal.ui.editor.getContent() and thus will not be saved correctly.
Steps to reproduce
- Open rich text editor like google docs
- Enter some text with styling like font size or colour.
- Copy and paste it to the editor.

