Wow.  That's terrible, both that the correct answer was marked incorrect, and that after a few weeks you still have no reply.

Have you tried using "Report a problem" in the upper right to submit a support request?  That can include relevant screenshots.

Good luck.  My experience over the last couple years makes me think that nowadays Khan Academy is focusing more on the income than helping students learn. 

~ Janice, KA user since 2014

Yes terrible indeed. Also, I have been sending links to assignments that KA generates but they don't work when clicked on. They just go to the students dashboard. Any idea why? They used to work in the old KA until recently

Sorry, I've never used KA for anything like that.  (I'm an independent learner, not a teacher.)
Too bad KA doesn't have an area for classroom teachers to share ideas and help each other -- that seems like an obvious idea for an area in the Support Community.

Maybe if you make a separate post with a clear title like "Why do assignment links now to to student's dashboard?" other classroom teachers will see it and maybe someone will have a suggestion.

Otherwise, you may need to make a support request to KA.

We actually utilize Khan Academy as one (of many) portions of student grades, when students take assessments in front of us with their screens visible. This is the first time in years that I noticed the platform making a significant number of mistakes.

#1 -- This first mistake is wild because it is marked incorrect if it begins with y=, but not if it is transposed like in choice three.

#2. This second one, I read 12 times to make sure I wasn't making a mistake.

#3. This third one is just an example.

It is a little frightening --- I actually used to give out a whole candy bar (insert your extrinsic motivation here) if students caught a mistake, and gave out one piece of candy in the past three years. This is three mistakes out of twenty and they are actually impairing grades.

Varghese Alexander,

Did you report these mistakes to KA?  What response did you get?

@Everyone,
Are there websites or blogs where people review learning websites/apps?  Is anyone posting about how much worse Khan Academy has gotten?

Afternoon --- I actually was able to report these to Khan and they reassured me that incorrect feedback automatically becomes their number one priority to correct.

They are listening to feedback and requested that we all continue to use :

https://support.khanacademy.org/hc/en-us/requests/new