They changed the UX, you now drag the pin after setting your general location and choosing your destination. I think this is because they want to suggest more efficient pickup locations instead of just wherever you happen to be standing. Felt a little weird at first but I'm already used to it.
Which is fair enough, but nearly every driver I've spoken with hates the pin and a reasonable percentage get lost unless you put a landmark in as the address.
Weird, I've literally never used a landmark and drop pins 100% of the time. I've been taking 2-6 Uber rides a week for about three years. I've never had a problem.