iframely.com on Timeline

When posting URL with iframely.com API installed :

1. In his one page post show correct data, designed according to iframely options card, linked to the site. everything looks great.

2. In Global Timeline and in Profile Timeline it shows the same card twice. 

NB 

- there are custom changes of HTMLpurifier,  described here , which not affect in such way before iframely.com API was installed

- the problem exists on both browsers Chrome & FF