Attempting to create a registry value of type array does not work properly when a "-" is in one of the strings being added.
Results in this:
Using the GUI to look at the registry, results in a bunch of random words and characters being appended to the end.
Simply opening the registry value in the GUi and clicking OK without actually changing anything resolves this.
I've tested this quite a bit trying to troubleshoot, and it seems specifically related to the dash / hyphen character being in the string.
This is running Puppet 3.7.5 with Registry's latest version at the time of this writing (v1.1.0).