I use plantuml.jar for autamatic generating diagrams from *.puml files in folder. Worked nice untill I tried use russian text on Windows. puml files as all other are encoded with UTF-8. I see abracadabra on diagrams. To solve this issue I changed encoding to ANSI. Then it works.
Please fix this bug/add UTF-8 support under windows systems.
UDP. This is allready implemented.