Canadian English mistake
My Teams app language is set to Canadian English because that is what I speak. I often type words that end with -ize like organize. Teams complains that I am spelling it wrong and offers -ise instead. I am spelling it the correct Canadian way. -ise is the UK spelling. The -ize/-ise divide is the one area where Canadian English sides with US English over UK English.
Please update the Canadian English spellcheck to stop telling me I'm wrong.