I'm adding new values to the comboBox client-side, including an icon. Unfortunately, the image won't work. In fact, all icons of already existing items (which were added server-side) disappear. The imageUrl is correct, I also used the imageUrl of the currently selectected item.
This is my code:
Am I missing something?
Edit: If I don't set the ImageUrl to the client-side item, the other icons disappear anyway.