WYSIWYG MODE Enter issue on mobile

[SHT-3756]

Describe the bug

I applied tost-ui as a web app project. There is a problem with Enter when writing on mobile.

Set the initial type to wysiwyc for easy viewing for ordinary users This is an issue that occurs when wsiwyc is writing.

To Reproduce

Steps to reproduce the behavior:

1. Go to 'https://nhn.github.io/tui.editor/latest/tutorial-example03-editor-with-wysiwyg-mode' In Mobile(ios, android)
2. switch to "wysiwyc"
3. sea error

https://user-images.githubusercontent.com/83467914/162382282-fb84e86a-782c-4437-bae0-918b3499de8b.mp4

Expected behavior

1. "안녕하(Position the mouse pointer here)세요"
2. Enter
3. see error

Screenshots

Smartphone (please complete the following information):

• Device: [e.g. iPhone12, galaxy a8]
• OS: [e.g. iOS15.3.1, android 7.1.1]
• Browser [chrome, safari]

Additional context

1. It's the same issue when writing in English.
2. There is no problem with PC.
3. There is no entertainment issue when written with initialType markdown.

[jwlee1108]

@SHT-3756 Thank you for the issue. We'll check it.

[SHT-3756]

@jwlee1108 How's the progress going?

[DotJM]

@SHT-3756 @jwlee1108 From what I've checked, it seems to be affected by the screen size. As a result of testing on my tablet (Galaxy Tab S8+), it works well in full screen, but when I open a small window in multi-window, the same error as above occurs. The main difference is that when the toolbar is visible on one screen, it works normally, and when the 'More' option is visible because the toolbar is not visible on one screen, the corresponding error occurs.