since 2019.3 both boot parameters "live-media-path=" or "findiso=" stoped working on custom paths.
the last working version is 2019.2
it seams it fails to mount the partition.

last commands on screen before throwing the boot error are the following:

Running /scripts/init-premount ... done
Mounting root file system ... begin: Running
Running /scripts/live-premount ... done

is this a dropped feature or just a bug?