Load function only loads one BAM file at a time when region in view is >500k

REPRODUCE: Open BlueBerry. In the "Available Data" window open /Bluebarry/RNA-Seq Berry Development/SM/Reads/ and select some of the BAM files there. Click "Load Data". You should be challenged with "Region in view is big (>500k), do you want to continue? Click "Yes".

OBSERVE: IGB will only load one BAM file then stop. You can load the next one by clicking load data again.

EXPECTATION: This is unexpected behavior since I requested several BAM files and I chose to continue I would expect IGB to load all of them.