Yes, the next available FP under the wait times has been working all along but the page that shows all the available FPs has not been working since the
MDE change.
Also, you may want to stick with the MDE app to check when your in the park. It changes so fast now with phone access that by the time you switched apps to modify to get something you saw, it may well be gone. The TP availability is probably most useful for planning ahead of time.