When using Firefox and Hotmail for emails, no undelining of incorrect spelling in emails

[JohnKnee]

I have used Firefox for many years with Win 7, now I upgraded my PC to a new Win 11 PC, and since then, when writing an email in Hotmail, it no longer underlines miss spelt words. I Googled the problem and did everything in windows and in Firefox, I have two dictionaries Australian & US English in Firefox, I have enabled "Check your spelling as you type" in Firefox & the same in windows settings also in Hotmail settings, but still no good. I tried Hotmail using Chrome, and all worked OK, so this means Hotmail is not the problem. Even typing this it is underlining spell mistakes. Can you please help to fix this problem, if it cant then I have no choice but to use Chrome browser in future. Regards John

[siffemcon]

You can file compatibility issues

- via the 'Report broken site' option (https://support.mozilla.org/en-US/kb/report-breakage-due-blocking) (Send technical and interaction data to Mozilla must be enabled)

- on webcompat.com (https://webcompat.com/issues/new), esp. if you want to include a screenshot)