I've been using Photoshop since the 90s. Typically with the updates, maybe a few tools will move around, there are occasionally some nice new features & a few notable major developments over the years. But mostly, there's been no learning curve from version to version. Until recently. With Photoshop 2017/2018, I'm working like a newb, a veteran newb with many years of experience having to constantly search forums to do basic stuff I've done for years. I can't apply masks, I had to figure out how to turn my pen mask into a selection, I can't find tools, I can't use the colour swatch, I'm constantly fighting smart objects, I'm in the wrong mode etc. It sucks. Why?!