I have not been on the website in a little while, but I decided to start again today. Usually, I complete a lesson and then copy down the vocab learned in that lesson. However, when I tried to find the list of all the words I have learned, I could not find it. How am I able to access the list? There is no vocab tab like there used to be. If anyone could help me find the list it would be greatly appreciated.
There is not time frame yet. The first thing to come out will be a Team Feature in April-May. So, I'm thinking the vocab feature won't be back until after that. However, at least one user has created a userscript that restores that feature somehow. I can't recall who though. It might have been added to a wiki page. Try googling Duolingo Wiki Userscript and see if something comes up. Also, try talking with HodOfHod, they create userscripts, they might know who created the one for vocab.
Additionally, users have taken all of the vocab and uploaded it into flashcards for Memrise.
I hope this helps!