Constrain Scale in Photoshop using Shift Key

Thank you for this. I overlooked the link button and now things are back to how I would like it. 

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@TSeric wrote:

So I've been a little frustrated for a while about the forcing of the shift key to unconstrain which is unlike all of the other Adobe software pieces. It seems the Devs are trying very hard to make Photoshop unlike all of the other software pieces. This was acceptable back in the Macromedia days because they were made by different dev studios, but at this point, it's been decades since they've been different studios.

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The reasoning was not random. There’s been a movement among photo applications to make proportional scaling the default, so you add Shift only if you want distortion. Some of the biggest Photoshop competitors work that way (such as Affinity Photo).

Of course you spotted the major problem with this: Bringing that Photoshop default into alignment with the industry brought it out of line with other Adobe applications. It would have worked a lot better if all Adobe applications changed scaling at the same time, but instead it creates serious confusion for anyone using multiple Adobe applications.

But there’s more to it than the Transform checkbox. After a user outcry, the first thing Adobe did in an update was add a new preference that controls the default: Use Legacy Free Transform.

As a further refinement, in a later update they added the options bar checkbox you noticed, so that you can toggle the behavior at any time without changing the default.