I don't think it has that feature, you can try submitting a feature request for it in support.atlassian.com OR ask someone to create a plugin for it . It's a good idea and I'm not sure if how many will vote for it.
A workaround I can think for now is to link your Pull Requests to a JIRA ticket and log the hours there.
Hello! My name is Mark Askew and I am a Premier Support Engineer for products Bitbucket Server/Data Center, Fisheye & Crucible. Today, I want to bring the discussion that Jennifer, Matt, and ...
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