When I upload an image eg. with 3440px I configured Smush pro to resize my original image to 1920px.
When I now go to the media library in my primary language, the pixel size in the wordpress info is shown correctly.
When I then switch to another language, the image size is shown in the dimentions of the original image so e.g. 3440px.
The Smush pro plugin obviously doesn't correct the size in the DB of the other languages in the WPML Media helper table.
Please correct this issue and offer it in your next update of the plugin.