Push from firebase console always got default icon (Gradle Firebase 11.8.0)

Question

For firebase sdk 11.8.0, my push generated from firebase console directly to my application (which is in the background) always show default android icon but not my customized one.

It works fine when i downgrade the sdk to 11.4.2.

Anyone have the same bug?

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update:

just test with my oneplus 3T and nokia 6, running Android 8.0 and 7.1.1 respectively.

Both use Firebase SDK 11.8.0.

Nokia 6 worked, Oneplus 3T failed.

Not sure is mobile phone problem or Android System problem.

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Update @ 27-3-2018

Fix:
Thanks Piotr's update that this has been fixed on 12.0.0

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Update @ 17-6-2020 revised title to describe the problem accurately

Answer 1

It is a bug in Firebase version 11.8.0 on Oreo. I was facing the same issue, but when I downgraded to version 11.6.2 it working fine for me.

And now this issue is resolved in new version 12.0.0.