https://bugs.kde.org/show_bug.cgi?id=438608
--- Comment #10 from Julius Künzel <jk.kde...@smartlab.uber.space> --- @Jan In the meanwhile I have a new PC and new Plasma Version and I can still reproduce this. Have you tested it on X11 or Wayland? Here is some code to reproduce: QFileDialog *fileDialog = new QFileDialog(this); fileDialog->setFileMode(QFileDialog::Directory); if (fileDialog->exec() == QDialog::Accepted) { fileDialog->deleteLater(); } If you change use fileDialog->setFileMode(QFileDialog::ExistingFile) instead it works perfectly fine. Here is the output of flatpak-portal-test-kde after you triggered the "Open (modal)…" button in the "Open Directory" row. If you do the same with the one in the "FileChooser:" row there is no output: kf.kio.widgets: Cannot read information about filesystem under path "/home/julius/.var/app/org.kde.portal-test-kde/cache/thumbnails/" Qt: Session management error: networkIdsList argument is NULL Operating System: KDE neon 5.23 KDE Plasma Version: 5.23.5 KDE Frameworks Version: 5.89.0 Qt Version: 5.15.3 Kernel Version: 5.15.6-051506-generic (64-bit) Graphics Platform: X11 Processors: 16 × AMD Ryzen 7 5800HS with Radeon Graphics Memory: 15.1 GiB of RAM Graphics Processor: NVIDIA GeForce GTX 1650 with Max-Q Design/PCIe/SSE2 -- You are receiving this mail because: You are watching all bug changes.