Image bug style position in classic paragraph

Good morning

For several weeks I have encountered a problem with the position of the image within a classic paragraph whether I use it with elementor, gutemberg or directly in the classic editor

In a justified text I position an image (smaller than the width of the screen) to be centered in the image parameters

At the back end, no problem the image is centered
In front end the image is on the left

you need to add a css “display: flex;” for it to work

this is also valid for all positions of the image parameters

I use this plugin because it is more practical to have the “justified” button and to copy and paste texts from outside into wordpress

The page I need help with: [log in to see the link]