Apologies if this has been asked and answered. I don't even know how to frame a search of the forum for this.
I'm running the GenomeAnalysisTk-4_1.jar. After the run of any GATK4 tool (even just --help) a cartoon pops up, and the job will not exit until I manually close the image window. Quite a pain when running a big scatter-gather under cromwell. A Google Images search came up with "Best guess for this image: fashion accessory" which was not terribly helpful.
java -jar GenomeAnalysisTk-4_1.jar --help