As per title, Sorter does not work properly in FME2018 when fed from a FeatureJoiner that supplies Features downstream in Bulk Mode. It's similar to the bug that @takashi found when FeatureJoiner supplies Features to AttributeManager.
Attached workspace to show how Sorter does not work when fed directly from FeatureJoiner, but does work if put in an AttributeKeeper to split the features out of Bulk Mode into "Normal" Mode.
Workaround is to add a Transformer like AttributeKeeper (and sure there are other Transformers that may do it too).
Question is, has this been resolved in latest FME or is this still an issue?