Bug with {InstanceName} in UDT with subfolder?

7.7.1-rc2

I have a UDT with subfolders and tag inside

the {InstanceName} as value for a memory tag in udt root, return the right instance name.

the {InstanceName} as DisplayPath expression for an alarm on a tag in a subfolder return the name of the folder but not the name of the udt instance !!!