I confirm what was written before, re. what I made in your sandbox, with precisions aiming at reducing potential misunderstanding.
The problem statement: when you open the translator for the 1st time, the image is proposed for translation in visual editor. When you open it for the 2nd time (eg for another language), the image has vanished. Supposedly, any image should be proposed for translation, incl. legend, description, etc.
I made 2 posts on your sandbox. First one, I already opened it for translation. If I re-open it for translation, image is not proposed for translation.
The 2nd is "virgin". If you open it, you will see image for translation. If you open it a second time, image won't be proposed.
If you need to re-create the issue, use code editor. Copy the code of 1st article in a new one. And repeat.
This is potentially linked with my other ticket , re visual translator working once every 2 times.
What is proposed for translation also varies ... the "interpretation"' from string, classic editor and advanced editor vary.
If something is not correct, precise what you don't see in sandbox when doing what.
