[if] shortcode does not work for an image field

[kricou]

My simple template :
[if photo]
<div class="img">{@photo._img.medium}</div>
[/if]

Photo is never displayed.

[pmsteil]

Also encountered this bug...

[if photo]
{@photo._img}
[/if]

outside: {@photo._img}

The image will only be displayed the 2nd time...

[Lucbug]

Also encountering this issue.
Anyone found a workaround ?