Hi / Bonjour Nicolas,
Therefore i invite other people to clear cache at first and to check it because on fresh browse i didn't have this issue. I tried on FF, Opera, IE, Safari and Chrome without any trouble now.
At first i installed the starter edition..but after few hours, i decided to buy the business edition as i wasn't satisfied about new VM component status.
i guess the bug is in starter edition.
I also read a thread that people having the started edition needed firstly to put shop off-line and to make changes and save it. next to put online to reactivate data saving.
so i believe issue is in starter edition.
Anyway, i'm very pleased till now (only 2 days with hikashop) with your component.
A.