Version of Adobe InDesign

Adobe InDesign 2017 (English version)
Adobe InDesign 2025 (20.0, Traditional Chinese version)
Steps to Reproduce the Issue

Open Adobe InDesign and create a new document.
Prepare a CSV file with Traditional Chinese text using UTF-8 encoding.
Use the Data Merge feature to import the CSV file into InDesign.
Place the merged data field into the document layout.
Preview or finalize the merge.
Expected Result

The Chinese characters in the CSV file should be displayed correctly in the merged document without any distortion or encoding issues.
Actual Result

The Chinese characters appear as garbled text (random symbols or question marks) during the merge preview and in the final output.
Switching to different fonts (e.g., TrueType, OpenType, or system default fonts) does not resolve the issue.
Attempts with different encoding formats (UTF-8, UTF-16, etc.) and alternative CSV/text file formats (via Google Sheets, TextEdit) also fail.
Upgrading to Adobe InDesign 2025 (20.0) Traditional Chinese version does not fix the issue.