Translucent material FX with the sceneTexture

Hi, I was trying to achieve a local blur effect. Usefull for enhance FX such as impacts, shouts, …

Using a standard Translucent material and the sceneColor node works fine with opaque objects. However with translucent ones, the effect doesnt work.

I think that the problem is in the SceneColor node, even with separate translucency seems to have no effect on current 4.21. As far as I know the sceneColor node back in previous versions added each traslucent object in render order. In some version this behaviour was changed for optimization purposes.

Even whit this limitation, could be a way of getting the effect right in the current version?