Video Links - Garbled text appearing before the URL (#221C#)

I don't know why this keeps happening but it is extremely frustrating. After pasting in the link from my cloud server I can view the video just fine. But after a save or waiting a few minutes the link changes and adds broken code.

eg (#221C#https://mbc.box.com/shared/static/file.f4v) Where is the #221C# coming from?

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