Warping with one handle at a time OR how to keep edges straight when warping
Hi!
In illustrator and former versions of photoshop I seem to remember being able to control bevels/handles independently while using the warp tool. I can't say for sure but I believe on a mac I held ALT and could rotate a single handle independently of the rest. Basically I want the verticals to stay straight but they twist no matter what key I hold down.

In this screenshot for example , I'd like the vertical edge to remain straight, and only warp the horizontal axis. See below for how I want it to work (done in illustrator as an example)

Pretty simple stuff! I'm using a mac, PS2020, and have done this for years so I'm going crazy. Nothing on google addresses this simple task.
