We are seeing an issue where an excel report containing bar charts with labels, when converted to PDF, loses some of the chart labels. Similarly, part of the footer is obscured. We have not changed the template, but are only seeing the issue since this morning.
I am afraid, it is hard to say what could have gone wrong to produce such an unexpected result unless you provide us your sample spreadsheet for thorough investigation on our end. Please provide the sample as well as your code snippet to replicate the issue.