Endevor hangs when adding an element in foreground (ISPF), however it works ok in batch. Either the processor is executing JCLCHECK or an exit is calling JCLCHECK.
Endevor V18.0 and V18.1
Apply the following PTF:
Endevor V18.0 - PTF SO13955
Endevor V18.1 - PTF SO15658
If JCLCHECK is being executed in a processor, the workaround is to run the processor in batch. There is no workaround if JCLCHECK is being run under an exit.