Cant edit inline Image in Layout Paragraph

Have you been able to work out the cause of the problem? I ask because you set the "assigned" field to your name, which incidates you're actively working on it, rather than for indicating you reported it; unless you're actively working on an issue it's best to leave it at the default "Unassigned". Thank you.

@DamienMcKenna
I did not set the field consciously on my name. But indeed i could find a solution here:
https://www.drupal.org/project/drupal/issues/3274937#comment-14824232 🐛 Get CKEditor 5 to work in (modal) dialogs Fixed

The CSS worked for me:

.ck-body-wrapper .ck {
  --ck-z-modal: 1261;
}
.ui-dialog ~ .ck-body-wrapper {
  --ck-z-modal: 1261;
}

I put it into subtheme of claro.