Systemui crash due to ConcurrentModificationException in org.lineageos.internal.statusbar.NetworkTraffic

Expected Behavior

Systemui should not crash.

Current Behavior

Systemui did crash.

Possible Solution

Steps to Reproduce

1. Get yourself into some edge case of a situation.
2. In my case, it happened when the device was nearly out of WiFi range and kept switching between WiFi and LTE.
3. Not sure though whether that's the cause, but that's the only "special" thing I could make out about the situation.

/device cheeseburger /version lineage-17.1 /date 2020-11-10 /kernel /baseband /mods Magisk

Log

FATAL EXCEPTION: main
Process: com.android.systemui, PID: 2342
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1441)
	at java.util.HashMap$ValueIterator.next(HashMap.java:1470)
	at org.lineageos.internal.statusbar.NetworkTraffic$3.handleMessage(NetworkTraffic.java:196)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loop(Looper.java:214)
	at android.app.ActivityThread.main(ActivityThread.java:7356)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:940)

I have read the directions.