cancel button cut when browse folder for Arabic language in mac 10.11 and 10.12

We set a browse button to open Document folder to browse. Then the window shows, there is a cancel button in the bottom, but when the os language is Aarbic, the cancel button is  cut in mac 10.11 and 10.12.

Mac 10.13 is ok.

strOrgPath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation); QString strDir = QFileDialog::getExistingDirectory( this, strTitle, strOrgPath, QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);