Hi @vthhieu -- Welcome to the Atlassian Community!
I tried to replicate your steps (select Create Epic and it instead creates another issue type) and was unable to do so.
If you are still seeing this issue, please ask your site admin to submit a defect report to Atlassian here: https://support.atlassian.com/contact/#/
Best regards,
Bill
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.