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Причем на Lubuntu 17.04 всё ок. Может мне попробовать поставить предыдущие сборки? можно ли?

alxpsr@alxpsr-pc:~/projects/phantom$ joxi
QML debugging is enabled. Only use this in a safe environment.
QSystemTrayIcon::setVisible: No Icon set
content-type missing in HTTP POST, defaulting to application/x-www-form-urlencoded. Use QNetworkRequest::setHeader() to fix this problem.
content-type missing in HTTP POST, defaulting to application/x-www-form-urlencoded. Use QNetworkRequest::setHeader() to fix this problem.
content-type missing in HTTP POST, defaulting to application/x-www-form-urlencoded. Use QNetworkRequest::setHeader() to fix this problem.
QPixmap::scaled: Pixmap is a null pixmap
QPixmap::scaled: Pixmap is a null pixmap
qml: onVisibleChanged * 1
qml: implicitWidth 0 210
qml: implicitWidth 0 210
qml: calcCoordinate = -820 11 0 790 0
QObject::connect: No such slot Core::ponoramUpload(QPixmap)
content-type missing in HTTP POST, defaulting to application/x-www-form-urlencoded. Use QNetworkRequest::setHeader() to fix this problem.
QPainter::begin: Paint device returned engine == 0, type: 3
qml: calcCoordinate = 177 650 1366 790 967
qml: calccoordinate *1
qml: calccoordinate *4
qml: calcCoordinate = 177 650 1366 790 967
qml: calccoordinate *1
qml: calccoordinate *4
qml: onShowToolBarChanged true 99 290 967 639
QIODevice::read (QFile, ":/certificate/joxi.pem"): device not open
QSqlQuery::value: not positioned on a valid record
QSqlQuery::value: not positioned on a valid record
qml: tool push button pressed
qml: window close