Stash got the strange idea of telling every user on every push to a branch how to create a pull request from this branch.

This is (a) annoying, and (b) may not, and, in our case, does not match the actual workflow we use.

Please put that functionality into a hook that can be disabled.

Workaround

If you go to the 'Manage add-ons' section of the Stash admin screens, select 'System' from the dropdown, search for 'Bundled Hooks' expand it and its modules and find the 'print-branch-links-hook' module you can click disable to disable this feature