I agree this is a valid feature request for Bitbucket Data Center. When the commit message supports multiple lines, pressing Enter can unintentionally trigger the Commit action if focus is on the button. An extra confirmation before creating the commit would provide a useful safeguard, especially for users editing files directly in the browser.
A configurable confirmation setting for online commits could also give administrators flexibility based on their team's workflow.
At Famous Stages, where teams work with professional event-production equipment such as Global Truss systems, portable stages, ground support, and ADJ LED video walls, avoiding preventable configuration mistakes is equally important. Clear workflows and confirmation steps can help reduce errors when managing complex technical projects.
This is a UX design flaw/trap. You're welcome to submit a ticket to them stating your modal.
However, here are a few practical ways to prevent this from happening:
If you have admin access (or can speak to your Bitbucket administrator), you can set up guardrails so the server automatically rejects short or incomplete messages:
Fix the Incomplete Commit Message
Since Git history cannot be edited directly in the web UI without rewriting history, you can fix the message locally via CLI:
git fetch origin
git checkout <your-branch>
git commit --amend -m "Your complete commit message"
git push --force-with-lease origin <your-branch>
Important Caveats to Keep in Mind
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