On the preview mode, there is a space or a margin in between the chart and its title. After exporting the report as PDF, PPT or MS Word, the space or the margin is lost.
The issue is casued by the system setting the margin zero "0" somehow during the export process.
1. Engineering Team is currently investigating the issue (WFA-14407).
2. As a work around, you can create a separate Simple Text Component and place that component where you opt to show it with the desired distance from the chart.
KBA , LOD-SF-WFA-DES , Report Designer , Problem