Marquee tool not cutting the correct pixels size

[AndRo Marian]

3 minutes ago, loukash said:

From your video I can see that you have enabled "Move By Whole Pixels", but not "Force Pixel Alignment".
It needs to be vice versa.

Already I say I have it and is the same result...
Anyway, Doesn't matter if the Transform Tab show perfect rounded value.

[loukash]

In any case, I can't replicate it by any means when cropping your image exactly by the steps you've provided in your first post. I'm getting a perfect new 672×378 px image as a result.
This is on MacOS El Capitan.

[AndRo Marian]

14 minutes ago, loukash said:

In any case, I can't replicate it by any means when cropping your image exactly by the steps you've provided in your first post. I'm getting a perfect new 672×378 px image as a result.
This is on MacOS El Capitan.

Already one person says he can reproduce on Windows and one can't on Mac.
Seams to be only for Windows thing.

Not sure who moved it to Questions but I am pretty sure I posted it to Designer Bugs on Windows...

[MEB]

Hi @AndRo Marian
I've reproduced this here both on Windows and macOS. It is indeed a different issue. I will get this logged to be looked at. Thanks for your feedback/support.

[loukash]

28 minutes ago, MEB said:

I've reproduced this here […] on […] macOS

I wonder what am I doing "wrong" that I can't reproduce it…? :D

[AndRo Marian]

10 hours ago, MEB said:

Hi @AndRo Marian
I've reproduced this here both on Windows and macOS. It is indeed a different issue. I will get this logged to be looked at. Thanks for your feedback/support.

Thanks you.

10 hours ago, loukash said:

I wonder what am I doing "wrong" that I can't reproduce it…? :D

No idea. Seams pretty weird. But not working on many things. If you just drag the mouse and cut it, works good. But if you change manually the values from Transform panel, appear extra empty pixels around it.

[loukash]

15 minutes ago, AndRo Marian said:

But if you change manually the values from Transform panel, appear extra empty pixels around it.

Aaah, now I got it!
This is weird.
Same in Photo, by the way.

Looks definitely like a bug to me.

To work around it, start the selection with Select All, then adjust it from the Transform panel. Be aware, however, that this may be accompanied by other weird things, like values you're typing not wanting to stick at first. Like I had to type H "200" first – which then resulted in "268.766404" (!) – before I was able to type "378" that would stick.

Also at least a few times I seemed to get a correct result by enabling and disabling Antialias before making a selection.

[loukash]

Upon a few more comparative tests, it looks to me that adjusting a marquee selection using the Transform panel (or the Move tool, for that matter) always applies 0.1 px Feather even though its value is set to 0.

So…

27 minutes ago, loukash said:

To work around it

… this is definitely the best method:

14 hours ago, MEB said:

Use the rectangle tool to draw the shape, set the dimensions you want in the transform panel (integer values), drag the shape layer over the image's thumbnail layer int he Layers panel to use it as a clipping mask, copy it to clipboard then File > New From clipboard. You should get an image with the correct dimensions and no transparency.