flash message repeats itsel 4 or 5 times.

[ybico]

Hi Cyprien, I hope you can help me with the issue I'm having.
Every time I get an error, I call:
window.FlashMessage.error('xyz');
it works fine, but the problem is that the flash message repeats itsel 4 or 5 times.
What could it be the problem ?
Thanks in advance for any help or hint.