camera raw open one file at a time

I always drag and drop several  raw files at once in PS and camera raw opened all the files.

still it s like this if I open the directly from Ps , but if I Drag and drop files from other app, like acdsee where all my files have labels or rating , camera raw show me just a file at a time, so I can't multiple corrections on several files at the same time.

both camera raw and ps are just freshly updated to the last version

thanks

A.