Blue squares on Map

[olehr]

I have built an app that outputs a pdf file containing a map of the user chosen area. Sometimes the map that is produced in the pdf file has blue squares in it as shown in the picture. When I browse the map report tool that created the output map it looks normal without blue squares. Any idea why this is happening? Thanks in advance.   

[ArtApa]

Hi @olehr - I think I was able to re-create this by switching off my wifi during the workflow execution:

Basically, this means that your i-net connection does not allow you to download all the map pieces for your pdf.