Hi im using vaadin framework ver 7.7.7. The sort indicator is missing after i Click Save for Grid inline edit. Can be reproduce in Vaadin Sampler Grid Item Editor :
http://demo.vaadin.com/sampler/#ui/grids-and-trees/grid/item-editor
This is intentional behavior to give user the indication that data is not sorted anymore. E.g. you can sort the Grid by name. Then edit the name to start with different letter. After the edit you see the name there. However naturally the data is no longer sorted by name. Hence you need to re-sort it.