Editing content with WYSIWYG sometimes results in appended @font-face code

[omahane]

Describe the defect

While editing KB articles, @font-face code would sometimes get appended to the intended content in the WYSIWYG. Sometimes it happens when I open the paragraph but before doing any editing myself. Sometimes it happens after I've edited the content and collapsed the WYSIWYG. In the latter case, I only notice it after I save my changes.

To Reproduce

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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

AC / Expected behavior

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Screenshots

An example where I noticed it before I began editing:

An example where it happened after I had edited

Additional context

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Desktop (please complete the following information if relevant, or delete)

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

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• [ ] CMS subsystem (green)
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• [ ] CMS-supported product (black)

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[omahane]

This is still happening to me all the time.