Wrong image dimensions in content preview

[rtp-cgs]

When using BackendUtility::thumbCode to generate a preview thumbnail the image dimensions are not the same as when using the core processing. I noticed this in the content preview in the backend as you can see in the screenshot.

With somehow-digital/typo3-media-processing package:

With core processing:

[thasmo]

During initial quick testing, when turning BE processing of media_processing on and off the dimensions of the generated image are identical for ImgProxy and ImageMagick, in my case.

On your first screenshot, the (square) image looks squished as if the original file's dimensions could be correct but the img tag uses wrong dimensions, maybe.

What type of image did you use? Is this a PDF?

[rtp-cgs]

The image is a regular JPG and I used the default image element of fluid_styled_content no changes made.