Long string values get invalid content

[Raees Iqbal]

Describe the bug
Long string values can have invalid content. The issue comes from a library used by vue-json-editor.

To Reproduce
Steps to reproduce the behavior:
Demo:

Expected behavior
Long values have correct content.

Screenshots

Desktop (please complete the following information):

• OS: macOS 10.15.4
• Browser NA
• Version 3.3.1

Additional context