It is there, but maybee convoluted.
When you are in a thread, you click on the search hourglass icon on the very top right
In the menu, u will see the word 'Everywhere', just change that to 'this thread'
I think it should automatically take you there when you open the thread? Does for me atleast. If not, on the top right there is a button that says "Jump to new"
After we finish the migration we are going to start working on a standalone mobile app :) But it will obviously take time since we are building it from the ground up (y)
Yes we are wokring on the timeout problem. Unfortunately, it looks like it will take a little bit of time to fix this one. In the meantime, you can goto "Whats New" and get a list of new threads, but it wont be all the new posts