Pull Request is not linked to Jira Issue through branch name

Steps to reproduce

1. Link a Jira instance to Bitbucket Cloud
2. Create a branch from an issue with the issue key as the name
3. Create a commit in the new branch
4. Create a pull request from the new branch

Expected Output

The Pull Request should be linked to the Jira issue through its branch name

Ensure that the source branch name includes the issue key.

https://confluence.atlassian.com/jirasoftwarecloud/referencing-issues-in-your-development-work-777002789.html

Actual Output

The Pull Request is not linked to the Jira issue.

Workaround

Link the Jira issue by adding the issue key in the PR description.