StarUML v6.3.0 is now available for download. This release includes the some fixed issues. The additional features are:

Support inherit style of compartment items

You can now customize the styles (such as font, color, etc.) of compartment items (e.g., Attributes, Operations) independently from their parent element (e.g., Class). By default, the Inherit Style property for compartment items is enabled, meaning they automatically adopt the parent element’s style. If you disable this property, you can assign a unique style to each compartment item. To toggle the Inherit Style setting, go to Format > Inherit Style or check/uncheck the “Inherit” checkbox in the Style Editor.

The detailed resolved issues can be found at Release Note.