Attribute “Poster” does not show Background Image

After some reading in the documentation of flowplayer I saw that preloading is not possible with splash images. So I deletet the splash image option and added a poster=”some-url-to-an-image” attribue to the shortcode. Unfortunately this leads to the problem that no background images is loaded into the video tag, as the splash attribute is empty and the poster attribute seems to be ignored.

Can you please set the background-url to the attribute poster if it is set.

Best regards,
Daniel