Doesn’t work on large images

Hello,

Cropping works fine for most cases, however it looks like there’s a problem with large formats.

I tried with a 3840×1990 image:
Here’s what I want : https://ibb.co/881j9hr
And what I get : https://ibb.co/nfTjh6c

After many tries, it looks like the real crop area is much smaller than the one I select.

It’s probably related to this post : https://www.ads-software.com/support/topic/image-size-limitations-2/

Quick test looks ok:

INFO Crop-Thumbnails 1.2.5
INFO PHP 7.2.18
INFO PHP memory limit 512M
INFO WP_Image_Editor_GD (choosed WordPress imageeditor class for jpg)
SUCCESS Temporary directory exists
SUCCESS Copy testfile to temporary directory
SUCCESS Testfile was successfully added to media-library. (ID:30577)
SUCCESS Cropping the file
SUCCESS Cropped image dimensions are correct.
SUCCESS Test-attachement successfull deleted (ID:30577)
SUCCESS Remove testfile from temporary directory
INFO Tests complete

Here’s the debug output:

[
  "validated input data",
  {
    "selection": {
      "x": 418,
      "y": 0,
      "x2": 1540,
      "y2": 1080,
      "w": 1121.4545454545453,
      "h": 1080
    },
    "sourceImageId": 411,
    "activeImageSizes": [
      {
        "name": "thumbnail",
        "width": 150,
        "height": 150,
        "ratio": 1,
        "crop": 1
      }
    ]
  },
  "filename: D:\\Programmes\\wamp64\\www\\example/web/app/uploads/[email protected]"
]

Here’s the start of the JS-Debug :

cropImage:{
  "url": "https://example.com/app/uploads/[email protected]",
  "width": 1920,
  "height": 1080,
  "gcd": "120",
  "ratio": 1.7777777777777777,
  "printRatio": "16:9",
  "image_size": "full"
}

I find it strange, why do the “cropImage” shows a 1920×1080 format if the real dimention is 3840×1990? Could this be related to the problem?

Any help would be appreciated.

Thanks!