Japanese IME bug when entering image alts and titles in rich text editing mode

[hand-dot]

Describe the bug

The Japanese IME does not allow you to type correctly.
The same problem may occur not only with Japanese IMEs, but also with other IMEs.

To Reproduce

1. Switch Rich Text editing mode.
2. Create Image.
3. Type Something 'alt' or 'title' in Japanese IME.
4. The characters you entered are not displayed correctly.

Expected behavior

Be able to type Japanese correctly in the image alto and title.

Screenshots

Applicable Versions:

• Netlify CMS version:
  • netlify-cms-app 2.13.3
  • netlify-cms-core 2.34.0
• Git provider: GitHub
• OS: macOS Catalina Version 10.15.6
• Browser version Google Chrome Version 87.0.4280.67
• Node.JS version: 14.15.0

CMS configuration

publish_mode: editorial_workflow
backend:
  name: git-gateway
  branch: master

media_folder: static/img
public_folder: /img

collections:
  - name: "blog"
    label: "Blog"
    folder: "src/pages/blog"
    create: true
    slug: "{{slug}}"
    fields:
      - {
          label: "Template Key",
          name: "templateKey",
          widget: "hidden",
          default: "blog-post",
        }
      - { label: "Title", name: "title", widget: "string" }
      - { label: "Slug", name: "slug", widget: "string" }
      - { label: "Publish Date", name: "date", widget: "datetime" }
      - { label: "Description", name: "description", widget: "text" }
      - { label: "Thumbnail", name: "thumbnail", widget: "image" }
      - { label: "Body", name: "body", widget: "markdown" }
      - {
          label: "Tags",
          name: "tags",
          widget: "list",
          max: 5,
          min: 1,
          default: [],
        }

[martinjagodic]

Solved in Decap 3