We upgraded from version 1.29 to 1.37 of the JUnit plugin and now the "Test Result Trend" only shows the last 51 builds instead of the several hundred my job has in its history. In the screenshot, I get builds #1352 through #1453 (I also confirmed that the 51 number is constant–a build is rolling off the chart with each new build). Before the upgrade, the chart extended back to #812, which corresponds to when we started retaining all build logs for this job.
This is a major issue for me since the job builds multiple times per day and I need to be able to see the overall health of the job over time at a glance. The current view represents less than 2 weeks of job history, which is not as helpful.
Guessing related to PR #134 in version 1.30 of the plugin, which looks like a pretty much total rewrite of the graph?