[UserScript] Advanced Context Sentence

It seems like they have moved the update of the Lesson screen from the preview server to the main site. I have already prepared a fix for this script, but I wanted to test it a bit more before posting the updated version. I didn’t expect the WK update to happen before they fixed all the reported bugs, so I took too much time. I will try to post the fixed version here in the next few hours. Until then, you can try the script compatibility mode that WK provided (available on the settings page).