Bitbucket branch misalignment and conflicts

Question

I am experiencing strange behavior of Git/Bitbucket. We are a small team of developers working using following workflow:

All features are developed in branches started from master. And we have a production branch. So to publish a feature we create 2 PRs in Bitbucket: feature-branch -> master master -> production It's often that there are multiple features being developed in parallel, so we have to make sure that feature branches are aligned to master before merging the PR. Sometimes this requires resolving conflicts.

The things we observe:

• Once creating the PR master -> production Bitbucket shows message:

X commits behind "production".Sync now.

• Sometimes there is a conflict between master and production which is always trivially resolved.

• When creating the PR Bitbucket generates commit message automatically and every time it contains commits that were merged before. This happens even if i create PR when branches are aligned, which can be confirmed by the fact that diff is empty.

What could be a cause to the above? I can't figure out. To my understanding there should be no conflict or misalignment between master and production as we don't commit to production directly.

The settings we use for PR and branch management: