Bug that shoots down practice lessons

Does anyone else see this kind of strange behavior:

(1) At one point in a lesson it doesn't show the results after checking the answer, just the continue button.

(2) On the next screen the layout is getting distorted. And you can't check your answer, the button is grayed out...

(3) ... so you have to skip.

(4) Then you get a fault for a correct answer.

(5) And after clicking continue again the whole screen layout is scrambled.

Then you can just quit the practice lesson - and of course you lose all your correct answers. It happens only in practice lessons and mostly near the end, but quite often over the last few days. Very annoying!

I can provide 5 screenshots if needed or try to look at this Facebook posting in the group "Duolingo Dutch learners":

February 1, 2015


Hi all, thank you for reporting this. We've pushed a fix for this issue, can you let us know if you're still experiencing this? Thank you and sorry for the inconvenience!

February 11, 2015

I've just done 5 lessons without any problems, so looking good.

February 11, 2015

Two days without problems so far! Feels better, thanks a lot! :-)

February 12, 2015

Yes it all looks good now. Thank you so much for fixing it before I threw my laptop out of the window in frustration! Well done to all concerned.

February 12, 2015

Yes, it happened to me as well today for the first time.

I'm glad it's not my pc problem. I hope they will fix it soon.

February 1, 2015


My course was the Swedish one.

February 1, 2015

Yes, probably so, especially the first one. Great that you submitted a support request. It is something happening in different trees and with different browsers (ma at latest Firefox), and just started recently, so probably a real programming problem...

February 1, 2015

Yes, I had this happen a few times already. By the way, it is possible to check the answer and continue by pressing enter, so there is some way to overcome the problem. However, when the bug occurs, the audio questions won't be played, and those have to be skipped every time, which is frustrating.

February 1, 2015

Yes this has been happening to me a lot recently and its very frustrating. As you say it always seems to be when you are nearing the end of the lesson and the only way out for me is to quit and start again. I am doing the French lessons so maybe its a bug that is affecting all learners.

February 3, 2015

It happens to me in the Danish lessons, too.

February 4, 2015

Would not let me continue after discuss sentence

February 8, 2015

This is happening to me all the time since the last week. Sometimes you can still complete the lesson by using the keyboard only, but sometimes the progress bar stops going up too. Very frustrating!

February 9, 2015
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