Softlink to external drive not working

Dear readers and professionals

During the activation of my external drive “External”, a softlink “External -> /mnt/Scratch/Volumes/External” was created automatically.
Unfortunately this softlink doesn’t work if I double-klick it if I connect to the home folder “Frontrow” over AFP.
I do have to set a alias to the external drive.
Is this a normal behavior or is there a error in this?

Thank you for your help.
Kind regards
Thomas Thaler