P: Doesn't constrain proportions when resizing from side handle while holding Shift key

You are right. btw there's option to comment one's post 😉

@Donnie Chance 
Yep but do it right. Talk it through, announce it widely, make it work the same in all apps - then release it.

Inconstancies across apps in the suite is already sloppy, this change sums up decades of frustration for many of us. We don't need another Apple, anyone remember FCPX? I switched to Premiere because of this kind of nonsense.

Just do it right - our clients expect nothing less, is it really so hard?

I've wondered for years why it DIDN'T work this way. Almost every time I go to scale an object, I want it proportional ... why did I have to hold down the shift key for what most of my colleagues agree should be the default behavior. I do, however, believe in consistency ... so please change Illustrator as well. And thank you ... I can now scale objects without having to set down my cup of coffee 🙂

I'm also facing this problem
previous PS when i use transform function, press shift and drag from the corner will auto constrain
with this new version CC 2019, even a square also become rectangle.
I had already updated but no use.
please help

Agreed, this has always driven me nuts but now it’s a whole new level of stupid.

This is ridiculous. What are you doing Adobe? So now in some programs I hold shift, like I've done for 10 years, but in Photoshop it's no longer the default behavior? How does inconsistency between keyboard commands from one application to another equal an improvement. Shift to constrain should be the default. Was someone actually complaining about this? So now I have to train my hand and mind to hold shift in other applications but not Photoshop? Please give us an option to revert to legacy.

IMO it should behave exactly as in Illustrator

They should change status again to: unsovled 🙂

It wasn't intended to refer to vectors only.

In the original complaint it refers to Shape, which i guess means a Shape Layer or Path, yet adobe did not implement the proportional transform is now the default behavior of transform in Photoshop with vector graphics (shapes/paths) so how can this be marked solved?