For over 20 years, photoshop had a simple keyboard shortcut in place - press shift to scale proportionally.
In the last 3 years, they reversed this, so that holding shift down actually makes scaling UNproportionate (disproportionate? - you get the point).
Over the last several months, with each update it seems, my commands go back and forth between the two.
Maybe it's time to make this a user preference, so that this awful prank stops slowing down our workflow.