Repeated Canvas Size change BUG | Content/Position shift

[johny_roger]

Dear all

did anyone have issue with repeated canvas size changing?

• Repeat change canvas size with action OR script shifts it's content to the right side.
• Horizontal and Vertical is set to center/center or center/top.

Screenshot one shows the document before the canvas size operations and Screenshot two after 50 changes.

I need to change the size in a batch/script command where it will be changed for about 50-100 times in a row and it should NOT shift the content/center.

Screenshot Original Document

Screenshot after 50 canvas size changes

Mac OS 10.12.3 (16D32)

PS CC 2017.0.1

[c.pfaffenbichler · Accepted solution]

Do you use odd numbers?

Edit: Odd numbers can cause the necessity for rounding if the reference point is the center, so what you describe would not seem that surprising.

[johny_roger]

c.pfaffenbichler​

Thank you so much for the prompt answer. This was the case as i had 1155px and that caused the problem.

Did not know tho, that we can't use odd numbers when setting the canvas size.

Have a good day.

[c.pfaffenbichler]

You can, but when the reference point is the center and the original dimension is an even number Photoshop has to round at some point.