java.util.ConcurrentModificationException in activity onCreate

In our case, we are only seeing the crash with

com.google.firebase:firebase-analytics:17.2.2 

reverting to 17.2.1 has fixed the problem

This happens too if you are using firebase-core:17.2.2, because firebase-analytics is the same library rebranded. Take into account that as per official docs, current usage of firebase-core is deprecated -> https://firebase.google.com/support/release-notes/android#latest_sdk_versions

Revert your Firebase Core library to:

implementation 'com.google.firebase:firebase-core:17.1.0'

I've seen this crash on both v17.2.1 and v17.2.2, but since reverting to 17.1.0 all has been fine.

I've reported the bug here: https://firebase.google.com/support/troubleshooter/report/bugs

Update

Thanks @Sébastien, reverting to v17.2.0 should also work:

implementation 'com.google.firebase:firebase-core:17.2.0'

It is finally fixed in 17.2.3: https://firebase.google.com/support/release-notes/android#analytics_v17-2-3