[OpenLayers-Users] WMS request done twice - transitionEffect - OL implementation

[paweluz]

Hi 

I am using OL 2.10 and I noticed something strange... When I am doing
zooming or panning on map request is done twice for images that are tiled. I
know that responsible for that is parameter transitionEffect  that I have
set to resize. When I change it to null requests are ok - done just once.
But on map it does not look good... I really like this transition effect for
resize value. 
My question is: 
Is OL implementation fine - I am just wandering since OL map already has
those images that needs to be resize (old tile for transition effect), and
only one request needs to be done for new tiles.... why OL makes those
requests twice. It is really hard for me to understand... Can anyone please
explain it to me? Or maybe this is a bug, and is near future it will be
fixed? 


Regards, 
Pawel

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