P: Snap does not work when resizing proportionally

Hi, on Photoshop v21 I'm still having this issue, snap to smart guides is only working when I'm NOT constrain transforming, whether I have Legacy Free Transform activated or not

This issue should be fixed in the current version, Photoshop 2020 v21.x or later. Let us know if you're still having trouble.

When you resize proportionally an object, you hold shift+transform. The shift key automatically disables all Snap features, and it's not usable and I cannot align my images correctly. This isn't a problem when the shift key isn't pressed.

Photoshop has gone into some serious bugs lately. From the bug that doesn't show live text preview when a font is being resized, to many more. Please, I am like begging for this to be fixed. I have even looked into other programs like Affinity Photo and Designer, and they do not have this stupid, ridiculous issue that should NOT be a thing in Photoshop. This probably sounds like a small deal, but it is a huge deal to many designers.

Folks:

We do have a bug on this behavior and we're going to look into it. Thank you for your feedback!

Eric Floch
Photoshop Quality Engineer

snapping to center handles works, but will scale your image width or height  only, not together. causing it to distort if the image is not in the ratio of your canvas. I am looking for a way to proportionally scale my image to the edges, and make it snap. which ever I choose. or an option to fit to width or height as a menu item.

Good catch for the edges snapping. And again, it works from the center handles.

we do have the handy resize image during place but that's only if use "place" and does only fit to height. fit to width also would be welcome no matter the cropping, many users need full frame. the big change would be if the free transform was snapping at 4 corners and not just 2. 

This would seem fundamental to so many different types of workflow. It's really shocking that it's never been fixed.

if fact, shift+transform disables all snapping altogether. I was intending to write a feature request to allow snapping to document bounds as you shift transform. this would help tremendously when wanting to place photos perfectly fit to document width or height as you scale them. seeing a similar feature request was submitted 5 years ago does not leave me optimistic... so not fit to canvas and no snapping. we're losing pixels here 😞

it was so frustrating to constantly find transparent edges (and significant loss of quality if you have proportionally scaled up/down and low resolution sources) when free transforming backgrounds that i spent some time before figuring it out. first remark: guides are irrelevant so no point in using them, they just don't snap when holding down shift key
the best solution i use now is here:
1) measure your canvas size and remember/copy it (actually you probably know it as this is relevant to you in the first place)
2) free transform
3) move and snap left top corner to the corner of your canvas 
4) switch reference point location to upper left corner (the one that you snapped to 0:0)
5) lock the proportions by clicking on the link button between W and H figures (each at 100% for now)
6) switch the unit of height (if you are trying to compensate height difference) or width (if width is your desired constant) to mm/cm/inch/pixels/point/picas, whichever absolute unit you are using by right clicking on 100% and selecting it from the pop-up menu
7) enter/paste the number of absolute units of your canvas size measured in the first step as new height or width (and press enter)
😎 if needed, move now proportionally resized object again
9) commit transform (press enter again)
10) voila!

P.S. i would definitely qualify this as a bug not a feature