Change of target branch in created pull request is not displayed

[lakostin]

• Gitea version (or commit ref):
  1.12.0+dev-268-g505e456f2

• Git version:
  2.17.1

• Operating system:
  Ubuntu 18.04.3 LTS

• Database (use [x]):

  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite

• Can you reproduce the bug at https://try.gitea.io:

  • Yes (provide example URL)
  • No
  • Not relevant

• Log gist:

Description

In opened pull request i want to change target branch from master to another:

I press edit and choose another branch:

After i pressed save, nothing changed visually:

and in console i got an error:
index.js:822 Uncaught TypeError: $.post(...).success is not a function
at e (index.js:822)
at HTMLDivElement. (index.js:832)
at HTMLDivElement.dispatch (jquery.js?v=1d135a86e5595bfe682bc921cd4eae49:1)
at HTMLDivElement.v.handle (jquery.js?v=1d135a86e5595bfe682bc921cd4eae49:1)
e @ index.js?v=1d135a86e5595bfe682bc921cd4eae49:1
(anonymous) @ index.js?v=1d135a86e5595bfe682bc921cd4eae49:1
dispatch @ jquery.js?v=1d135a86e5595bfe682bc921cd4eae49:1
v.handle @ jquery.js?v=1d135a86e5595bfe682bc921cd4eae49:1

Changes appear only if i press any other tab (commits or files changed)

[CirnoT]

Please update to master and try again; this issue should be fixed by #11379

[stale]

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