Script error occurs in the WYSYWYG table

[seonim-ryu]

Describe the bug

Script errors occur in certain situations in the WYSYWYG table.

To Reproduce

Steps to reproduce the behavior:

When adding a column

1. Enter text in a table cell.
2. Place the cursor on the text after the space.
3. Right-click to open the context menu and select the 'Add Column' menu.

When the selection is finished outside the table

1. Select and drag multiple cells in the table.
2. Stop selection outside the table.

Expected behavior

Script errors should not occur.

Desktop (please complete the following information):

• OS: All
• Browser All
• Version 2.2.0