Ive just read your ticket now and will get Zuzana to respond. So then she will advise me on the definitive fix for this issue.

Thanks

Most appreciated.
I think the fix/mod was just done on the one site. I 'reported' my observations on the ticket, so I'm sure/hopeful that the ultimate fix will be found.
Thank you.

Yes, I did check it.
So from what I saw:

- greenpark website was working correctly with defined width, for some unknown miracle reason it worked with auto. But I can't tell why as there is no reasonable explanation
- dalineo website I applied same like above yet no width definition is loaded so it is not working. So instead of adding youtube code into k2 media, I added Youtube embed code with width and height definition inside k2 media and it is working correctly now.

I didn't see such a weird behaviour on any other website, so I am very sorry, but I can't explain what is going on here.