OS X AutoCorrect: Why is this happening?

[Gemütlichkeit]

I type the words "here don't" on some sites and OSX auto corrects it as "hère don". I used google translate to auto detect and it looks to be a French term.

Why would this happen and why for only some online text boxes.

I tested it on this thread and it didn't auto correct it.

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A way I stopped it was to uncheck "Correct spelling automatically".

 

[WRP]

Just so you know, Safari has its own spell check engine than the core operating system. This is probably a safari specific item if it doesn't happen in text edit.

 

[iThinkergoiMac]

Could you have other languages than English enabled?