For some of our jobs, the test result section doesn't display the trend chart. Maybe the configuration between those jobs is somehow different? What is the best way to get more diagnostic information?

On the job page, the test result trend is displayed normal, also the (manually created) link to the chart image is working.

This is the HTML snippet of the div tag for this job:

<div style="float: left; margin: 0px 0px 5px 10px;">
<h3>
<a href="job/clinapps_3_1_ci/">clinapps_3_1_ci</a>
</h3>
</div>