Duplicate "update by merge" button

[Fogapod]

Description

I have duplicate button each time i create PR from outdated branch

Screenshots

Gitea Version

1.17.0+dev-719-gf0ce5470e

Can you reproduce the bug on the Gitea demo site?

No

Operating System

No response

Browser Version

Chromium based 100+

[lunny]

Do you have a customize template file?

[Fogapod]

I haven't done any customization. Just built gitea from source. I only ever changed config file