Lore Core dumps on right click in empty transaction window.

System Linux, Ububuntu 16.04, 64 Bit. 
If I go to transactions, and do a right click in the "empty" window, then the software fails. 
Janko already investigated on it: 
`
found this in log GUI: ASSERT failure in QList<T>::at: "index out of range", file /home/janko33/Lore/bitcoin/depends/x86_64-w64-mingw32/share/../include/QtCore/qlist.h, line 537

` 