One more thought too - if you are using the browser-based version of Spark, you may find that spell check is being driven by your browser properties. I normally get the red squiggle when I spell a word wrong, but when I tested turning it off in my browser, I no longer received that notification. (of course this presupposes you are using the browser version of Spark instead of the Windows or Mac version!).
Not sure if this is new since Cisco Spark updated to Webex Teams, but it is now possible to do this for the client on Mac:
1. Click the "Edit" menu
2. Mouse over "Spelling and Grammar"
3. Uncheck "Correct Spelling Automatically"
Please try going to System Preferences/Keyboard/Text and uncheck Correct spelling automatically.
Hope this Helps
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