Creating new folder on sftp:// server from Save File dialog crashed the whole thing. Sublime Text, which initiated the dialog, survived the crash though, and continued to run as nothing happened.
STEPS TO REPRODUCE
1. Create new file in any editor that can use xdg-portal, e.g. Sublime Text or Kate.
2. Hit Save or Save as…
3. Navigate to an sftp:// server, if you got one. I don't know if this is sftp-specific -- maybe other special locations:// would work too.
4. Select «New Folder» action (there's a button on the right of a toolbar, and it's in a context menu too)
5. Enter a valid folder name, and confirm (OK/Enter)
Portal dialog crashes. Although the folder was already there the next time I opened the dialog.
Should not crash.
Operating System: Arch Linux
KDE Plasma Version: 5.23.80
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.15.12-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2
It is not consistent. There might be some race condition, or network lag affecting the bug.
*** This bug has been marked as a duplicate of bug 433347 ***