The "Reset" button is kicking me out of the course

I am trying to reset the lessons back to the initial state. When I select the button, the top level interface appears (i.e., outside the course where I was to where the available courses are listed). Going back to the lesson afterwards, I see that sometimes the section is reset, sometimes not.
 

Something seemed to have destabilized starting yesterday. I notice that if I go to the top of a lesson and press the "Hear It Say It button, it scrolls down normally then suddenly jumps to the main sign in page.

I also notice that when I open a lesson, the count up timer for the lesson shows something like NaH:NaH for a second or two, then the numbers appear. 

Finally, I don't think P and R are working to play or record responses in the transcript or additional vocabulary sections as (I think) they did in the past. But they are working in the testing section.

¡Qué extraño!

Hi Steven/Dan - We upgraded some of the backend code yesterday, which broke a few things unexpectedly! The issues you mention are being worked o as fast as we can get to them.

Note that re P and R hotkeys, these only work on the Tests. They have never been implemented on the transcript and extra vocab sections as these are not laid out in a way conducive to using those hotkeys.

Thanks for the update, Jason. I was not sure if the hotkeys worked in other sections as they did on the tests. 

Seems to be working again, thanks. Good job on continuing to rework the back-end code.
 

I just finished the Travelogue course resetting all the lessons. I just want to add here - since we're talking about back-end code - how impressed I am with the mechanics: consistency in displaying the pages and crisp performance. Very clean. Kudos to the IT team.
 

Hi Steven - Thanks for the feedback. I have passed it onto the IT team!