Self Checks

• I have read the Contributing Guide and Language Policy.
• This is only for bug report, if you would like to ask a question, please head to Discussions.
• I have searched for existing issues search for existing issues, including closed ones.
• I confirm that I am using English to submit this report, otherwise it will be closed.
• 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
• Please do not modify this template :) and fill in all the required fields.

Dify version

1.7.1

Cloud or Self Hosted

Cloud

Steps to reproduce

Create a workflow with an input select
Make sure the select value is required
Chose a default value

✔️ Expected Behavior

Running the workflow should not report "value cannot be empty" for the select input

❌ Actual Behavior

The default value is ignored and the input is considered empty