Problem

When in a sequence of jobs (= workflow) the last job in status open is deleted, the task will stay in status "open", but "workflow finished" is expected.

When in a sequence of at least 3 jobs, the middle one in status open is deleted, the next one will not jump to open but stay in waiting.

Solution

When a job is deleted we need to check if this affects following job states or the task state and set those states accordingly.

(Hint Thomas: There were workflow recalculations triggered on adding / deleting jobs. Seems this is not the case anymore.)