Small bug on character count

What's up?

When I enter the big editor to edit a post (not when making a new post), RES shows a character limit of 10,000 as opposed to the proper 40,000 limit.

Edit to add that it doesn't prevent me from posting past the 10,000 characters, just turns red when I do.

Where does it happen?

Big editor.

Screenshots or mock-ups

Screenshot

What browser extensions are installed?

AlienTube for YouTube, Google Docs, Google Docs Offline, Google Mail Checker, Google Sheets, Google Slides, LastPass: Free Password Manager, Magic Actions for YouTube, Reddit Enhancement Suite, and uBlock Origin.

I tested it in incognito mode with only RES enabled, still happens. Didn't see this mentioned anywhere from a cursory search, hope this all helps!

• Night mode: false
• RES Version: 5.6.5
• Browser: Chrome
• Browser Version: 59
• Cookies Enabled: true
• Reddit beta: false