Compare this: http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuIfAJIv9p4lFILK8pan9HU8wLI9nb88pzL9IbRYu75BpKe3Q0000
To this: http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuIfAJIv9p4lFILK8pan9HU8wLI9nb42IUafS3gbvAK1T0000
I'm not sure what diagram type the latter is, but I know it worked in 1.2019.12. Now we're upgraded to 1.2020.2.
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