TitleBarIcon on Palette not shown?

I have a Palette and defined the Titlebaricon. The icon is also defined (and displayed) in other dialogues, but not shown in palette.

Is there a known resaon?

Hello, Peter, I see no reason.
Works fine for me (source is a transparent ICO).
Please upload a small sample.
Regards, Fred

Here is an example, the creation date of the palette is already some years ago. I added a modal dialogue which display the picture. One image comes from an ICO, the other from PNG.

Hi, your palette works fine for me.
Regards, Fred

Now I see - it seem to be a standard behaviour. It is

- displayed in Autocad when the palette is floating
- NOT displayed when palette is docked and NOT displayed in Editor

Thanks Fred.