Outlook 2016, Ignore Replies and Forwards not working

I had this question after viewing Outlook 2010 - Spell check - "Ignore orignial message text in reply or forward" not working.

Has anyone had issues with Outlook 2016 and this setting?  I do not want to spell check replies and forwards and I do not want to use "spell check as you type" .  So I have " Always check spelling before sending" AND "Ignore original message text in replies and forwards" both checked.  

Still when I reply or forward a message, the original text is spell checked.

We are using Windows 10 and Office 2016 Pro.  Both are 64 bit versions
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Stacy BrownSenior Applications AdministratorAsked:
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Jackie Man IT ManagerCommented:
You need to set the email format as plain text if you want to enable Ignore original message text in replies and forward option.
Stacy BrownSenior Applications AdministratorAuthor Commented:
Took me a little while but I went through and checked/unchecked all of our Outlook addins and found that a home-grown version of Reply Monitor seems to be the culprit here.  Thanks to any who have spent any time on this.

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Stacy BrownSenior Applications AdministratorAuthor Commented:
Found the answer on my own before anyone had posted an answer.  Added a comment in case anyone else runs into a similar issue.
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