QCAD community, Git ba68e28d3d (current HEAD), fresh clean compile on Ubuntu 18.04/x64 (gcc 7.4.0, Qt 5.9.5)

QCAD version  3.23.0.2
Warning:  QApplication: invalid style override passed, ignoring it.
Warning:  Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute before constructing QGuiApplication.
Warning:  action not found: "Scheme"
Warning:  RScriptHandlerEcma::eval: script engine exception:  "TypeError: Result of expression 'RS.getIdealThreadCount' [undefined] is not a function."
Warning:  "<anonymous>(uiFile = 'scripts/Widgets/ViewportWidget/ViewportWidgetQt.ui', graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:172\n<anonymous>(viewports = [object Object], uiFile = undefined, graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:75\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:248\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:109\n<eval>() at 1\nslotTrigger() at -1\nopenFiles(args = , createNew = true) at scripts/autostart.js:209\nmain() at scripts/autostart.js:796\n<global>() at scripts/autostart.js:834"
Warning:  RScriptHandlerEcma::eval: script engine exception:  "TypeError: Result of expression 'RS.getIdealThreadCount' [undefined] is not a function."
Warning:  "<anonymous>(uiFile = 'scripts/Widgets/ViewportWidget/ViewportWidgetQt.ui', graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:172\n<anonymous>(viewports = [object Object], uiFile = undefined, graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:75\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:248\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:109\n<eval>() at 1\nslotTrigger() at -1\nopenFiles(args = , createNew = true) at scripts/autostart.js:209\nmain() at scripts/autostart.js:796\n<global>() at scripts/autostart.js:834"
Warning:  At least one uncaught exception:
Warning:  "<anonymous>(uiFile = 'scripts/Widgets/ViewportWidget/ViewportWidgetQt.ui', graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:172\n<anonymous>(viewports = [object Object], uiFile = undefined, graphicsSceneClass = undefined) at /home/ice/w/qcad/qcad/scripts/Widgets/ViewportWidget/ViewportWidget.js:75\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:248\n<anonymous>() at /home/ice/w/qcad/qcad/scripts/File/OpenFile/../NewFile/NewFile.js:109\n<eval>() at 1\nslotTrigger() at -1\nopenFiles(args = , createNew = true) at scripts/autostart.js:209\nmain() at scripts/autostart.js:796\n<global>() at scripts/autostart.js:834"
17:14:39: Debug:    "<global>() at 172"

Then QCAD exits (does not start). As far as I remember, 3.23.0.2 release was fine.