Caption removes white line (<br>) in Firefox

Hi all,

the new caption functionality is wonderful, but it seems to remove the white lines between paragraphs that are directly next to the picture/caption area of the post.

I’ve copied all the css-stuff from the default themes to my theme, but using caption still gives two different layouts of the post in IE and Firefox.

I’ve made the following two screenshots:
Firefox: https://www.tennispraat.nl/temp/postwithcaption-usingfirefox.jpg

Int. Explorer: https://www.tennispraat.nl/temp/postwithcaption-usinginternetexplorer.jpg