Issue Summary

When using the "Filter by label" macro in Confluence, Japanese characters included in the page titles or labels are not rendered correctly in the macro preview within the editor. The characters may appear as garbled text or broken symbols, making it difficult to verify the content before publishing.

Steps to Reproduce

1. Create a Confluence page and add some labels using Japanese characters (e.g., "会議", "プロジェクト").

1. Create another page and open the editor.

1. Insert the "Filter by label" macro.

1. In the macro configuration sidebar, specify the Japanese label created in step 1.

1. Observe the preview area within the macro configuration or the editor.

Expected Results

The page titles and labels in the preview should be displayed correctly in Japanese.

Actual Results

Japanese characters are garbled or rendered as "???".

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available