Assertion with Edit::setCountInMode() by negative transport position

I’m trying to set a count in ( Edit::setCountInMode(Edit::CountIn::oneBar) ). If I stop the transport on a negative position it hits a assertion:

JUCE Assertion failure in tracktion_EditTimeRange.cpp:16

It doesn’t help to set the position via TransportControl::setCurrentPosition(0.0) befor the transport stop.

Is there something I haven’t configured?