I don't think we can answer specifically without knowing the exact input you used and which part of the result you're referring to. You can't really say that it's incorrect in this unqualified sense, because we can use any constraint on the remainder that has the right "width". It also might be the case that the result was doing division with positive 11 and just adding the negative sign back in at the end.

I see. Thanks for the clarification. When I click "Step-by-step solution" I read

To compute -11 / 5 compute 11 / 5 and replace the negative sign at the end.

So, this seems less about using a different variant of Euclidean division and more about re-envisioning the entire explanation. I don't have the pro version, so I can't see the rest of the explanation. I don't see anything on the page that refers explicitly to Euclidean division, so I don't think you can fault the information provided, but I can understand being frustrated with it changing.