I just used the perspective warp tool with no issue a few weeks ago, and now it's acting very differently. When I select a quad, switch to warp mode, and start pulling a corner, the entire image warps instead of just the selected area. Please advise, I'm going crazy! Thanks in advance.
Also, are you only trying to warp that area by making a selection of that portion first? If so, you need to rasterize your smart object before doing so.