Created attachment 131053 [details]
gentoo-dolphin-20200820-191619.kcrash.txt

SUMMARY

Dolphin crashes when I navigate to a specific sshfs share (other shares work fine, there's a specific share which causes this crash, I've yet to determine why this is). This crash occurs on Gentoo but I've also reproduced it on a live iso of OpenSuse Tumbleweed (openSUSE-Tumbleweed-KDE-Live-x86_64-Snapshot20200818-Media.iso). I didn't test X11 on my Gentoo system but did on the OpenSuse iso (X11 is the default) and the crash did not occur. This crash is only reproducible on Wayland, specifically the "Wayland Full" session in OpenSuse's case which makes me think that this is an issue with the Qt Wayland backend and Dolphin running via Xwayland is unaffected.

STEPS TO REPRODUCE
1. sudo sshfs -o allow_other user@host:/path/to/share /path/to/mount/point
2. dolphin /path/to/mount/point
3. Crash!

OBSERVED RESULT

Crash

EXPECTED RESULT

No Crash

SOFTWARE/OS VERSIONS
Gentoo Linux:
KDE Plasma Version: 5.19.80
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.0

openSUSE-Tumbleweed-KDE-Live-x86_64-Snapshot20200818-Media.iso 
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0