@ughosal I have reported it as a bug to support and I am still awaiting a response.

There also seem to be some inconsistencies in the behaviour when you move, copy, rescale clusters.

I hope they fix it soon as it is messing up a few things I am trying to do at present! 

This is related to a major bug with Cluster Titles.

Here’s the steps:

1. Select Sticky notes in Frame #1
2. Cluster by keywords
3. Notes are grouped in a “Cluster Frame” with keyword titles.
4. Publish Frame #1 to PDF

Issues

• Cluster Frame titles are not included in the PDF so just a bunch of Sticky Notes
• Each “Cluster Frame” is treated as new page in the PDF so you get whole pages with eg. Sticky notes full page sizing.

This means you cannot use clustering on boards when you want to create a pdf report.