STEPS TO REPRODUCE
1. Edit a split
2. May need to adjust some details
3. Hit OK

OBSERVED RESULT
App crashes immediately

EXPECTED RESULT
Should save the edited split and return back to the ledger

SOFTWARE/OS VERSIONS
Today's nightly build for macOS: https://binary-factory.kde.org/view/MacOS/job/KMyMoney_Nightly_macos/

ADDITIONAL INFORMATION

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   QtCore                        	       0x1149c05b8 QObject::blockSignals(bool) + 8
1   QtWidgets                     	       0x10cf39bed QComboBox::hidePopup() + 909
2   QtWidgets                     	       0x10cf33754 QComboBoxPrivateContainer::eventFilter(QObject*, QEvent*) + 404
3   QtCore                        	       0x1149979f9 QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) + 249
4   QtWidgets                     	       0x10ce37c91 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 241
5   QtWidgets                     	       0x10ce39213 QApplication::notify(QObject*, QEvent*) + 915
6   QtCore                        	       0x114997727 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 167
7   QtWidgets                     	       0x10ce8e8fd QWidgetWindow::event(QEvent*) + 301
8   QtWidgets                     	       0x10ce37ca6 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 262
9   QtWidgets                     	       0x10ce39060 QApplication::notify(QObject*, QEvent*) + 480