Hello, when popular EWWW https://fr.www.ads-software.com/plugins/ewww-image-optimizer/ plugin is activated, SmartCrop does not work.

Great idea! Unfortunately these lines appear when the plugin is activated:

PHP Strict Standards: WP_Image_Editor and SmartCrop_WP_Image_Editor_Common define the same property ($size) in the composition of SmartCrop_WP_Image_Editor_Imagick. This might be incompatible, to improve maintainability consider using accessor methods in traits instead. Class was composed in smartcrop/includes/class-smartcrop-wp-image-editor-imagick.php on line 92

PHP Strict Standards: WP_Image_Editor and SmartCrop_WP_Image_Editor_Common define the same property ($size) in the composition of SmartCrop_WP_Image_Editor_GD. This might be incompatible, to improve maintainability consider using accessor methods in traits instead. Class was composed in smartcrop/includes/class-smartcrop-wp-image-editor-gd.php on line 94

Unfortunately, the plugin does not seem to affect the result in any way (I activated it and regenerated all thumbnails). I tried both with network activation and on a single site. I even disabled EWWW to see if that interfered, but again, no change.