Gnome-shell high VIRT usage

I noticed that gnome-shell memory slowly keep rising (mainly the virtual memory) from top command while running Genymotion. It doesn’t rise when I’m not using Genymotion, but it also won’t automatically decrease after I close it. Is this some kind of bug/leaks? Is there any way to diagnose this?

My gnome is 3.32.2, on Fedora 30. Extension only User Theme, Drop-Down Terminal, and Services Systemd.

Below is latest top output :
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6699 shira 20 0 4219628 238152 115396 S 3.3 3.0 0:47.39 gnome-shell