Selecting a payee from the drop down list of payees calls the "end transaction edit" dialog. Selecting either save or cancel option crashes kmymoney.
kmymoney[24695]: segfault at 2d0 ip 00007ff4a76653d7 sp 00007ffcdd0f5700 error 4 in libQt5Core.so.5.9.3[7ff4a73db000+52e000]
kmymoney[24837]: segfault at 0 ip (null) sp 00007ffeecf406d8 error 14 in kmymoney[400000+769000]
My apologies, just found bug report 390128 same issue
*** This bug has been marked as a duplicate of bug 390264 ***