I'm working on a project for a few years and we just noticed that 15% of our pull requests have "fix" in the title. That made me wonder, what's the number on other project. Would you mind checking? You can find pull requests with "fix" in the title on GitHub with "is:pr is:closed fix in:title".
We don't use PRs, but of the 22k commits to Master that we have (we don't have the best Git process), we have 5500 commits with "fix" in the title. So just about 25%.
For our server code: 5/95 (5.3%)<p>For our frontend code: 2/63 (3.2%)<p>Together: 7/158 (4.4%)<p>Based on the other comments, I had expected the percentage to be higher.
tldr: ~7%<p>Below are a handful of our largest repos. The first number is the PRs which match your search string `is:pr is:closed fix in:title`. The second number is the total number of PRs in that repo. I removed 2 outliers, repos that had 1/70ish and 1/80ish hits, which with those factored in our percentage drops to ~6.5%.<p>matches/total PRs<p>15/160<p>10/215<p>21/400<p>36/379<p>------<p>82/1154<p>-------<p>~ 7%<p>EDIT: fixed formatting.