Bug Report: Unicode/UTF-8 Encoded Response from API is Displayed as Garbled Text

[adgnahs]

Self Checks

• I have searched for existing issues search for existing issues, including closed ones.
• I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
• [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:)
• Please do not modify this template :) and fill in all the required fields.

Content

When my Dify agent sends a POST request to a Flask backend API (which returns JSON encoded in UTF-8 with Content-Type: application/json; charset=utf-8), the agent receives and displays garbled characters instead of correct Chinese characters.
Set up a Flask backend that returns UTF-8 encoded Chinese content:

@app.route('/gov-agent', methods=['POST'])
def handle_request():
return jsonify({"message": "你好，世界！"})
Confirm that response headers include Content-Type: application/json; charset=utf-8

In Dify, create a workflow with an HTTP Request node calling the above endpoint.

Observe the output returned in Dify → the result is garbled.

[dosubot[bot]]

I found 2 similar issues that might be helpful:

• Generate bar chart with Chinese xAxis displaying garbled characters - This issue was resolved by a pull request that fixed the display of Chinese characters in charts.
• garbled Chinese character - No solution was found in the comments.