Subscription assets work because that's what the update that broke Alt-drag was all about. Marketplace assets that have been uploaded in the past few years have all included size metadata in anticipation of this. A 6x2 tile will drop onto the VTT as 6 units by 2 units.. This is something that has been long, long asked for and will make map building from Marketplace assets much, much quicker. I am confident the devs inadvertently broke alt-drag and that it will be restored quickly. In the meantime, the Folder View in the Art Library still has the old functionality as a workaround.