IDA crashes while starting a debug session under Linux

[0xItx]

I'm using the precompiled binaries w/ IDA 6.9.1 on Linux.
After successfully loading & selecting skw3eldbg as the active debugger, whenever I attempt to launch the debugger IDA crashes with the following failed assertion:

ASSERT failure in QCoreApplication::sendEvent: "Cannot send events to objects owned by a different thread. Current thread e71004b8. Receiver 'DebuggerSelected' (of type 'IdaMenu') was created in thread 91ae2c8", file kernel/qcoreapplication.cpp, line 519

There's no indication to what the problem might by in $IDALOG.