Center image ignored when creating a topic

Hello,

It seems to me (at least when using Apple Safari) that the "Center" option of the integrated image is always ignored when creating the topic: I always have to re-edit the final saved result and re-select "Center".

Example:

1. Open a new topic
2. Add an image in the text from the "Image" icon in the toolbar
3. Click on the added image to use its central button "Edit"
4. Switch the "Position" parameter from "None" to "Center"
5. The image appears now centered: perfect!

But after posting your topic, my image is no longer centered.

=> I have to redo the centering action to get the correct result.

Is there a solution?

Regards.