I can reproduce this 100% with Network > Google Drive > My Account. When expanding large directories in tree view, a changing directory time-bomb awaits. If I attempt to close or switch **into** another directory, I can reliably crash Dolphin. 

This does happen outside of the above location but not as much.

STEPS TO REPRODUCE
1. Expand Network > Google Drive > My Account
2. Switch into or close it or switch to another directory
3. Dolphin exits

OBSERVED RESULT
This happens elsewhere but not often as much. I'm not sure what may be causing it but it's 100% reliably reproducible following the above mentioned path (for me).

EXPECTED RESULT
For Dolphin not to close out completely.

$ neofetch --off
OS: Manjaro Linux x86_64
Host: X570 AORUS PRO WIFI -CF
Kernel: 5.8.18-1-MANJARO
Uptime: 4 hours, 2 mins
Packages: 1398 (pacman)
Shell: zsh 5.8
Resolution: 3840x2160, 2160x3840
DE: Plasma 5.20.2
WM: KWin
Theme: Breeze [Plasma], Adwaita [GTK2], Default [GTK3]
Icons: breath2-dark [Plasma], breath2-dark [GTK2/3]
CPU: AMD Ryzen 9 3900X (24) @ 3.800GHz
GPU: NVIDIA GeForce GTX 980
GPU: AMD ATI Radeon RX 470/480/570/570X/580/580X/590
Memory: 31568MiB / 64264MiB

The AMD ATI Radeon card is the primary card driving Plasma.