StarUML

Таблетка от жадности, взято отсюда

• Step 1: Download and install StarUML Version 6 from main website https://staruml.io
• Step 2: Download app.asar file from https://drive.google.com/file/d/1_sKvHVL6SebnYF73iZxSWD9l48Pddzvj/view?usp=sharing
• Step 3: Copy app.asar file download in step 2 (Override app.asar file)

Проверено на версии 6.3.1 - работает!