Dear Mojang,
I noticed that slimes barely spawn in my survival realm.
I had the same issue in my offlline superflat creative world.
No matter what i do for example: change my game mode to hard. there aren't spawning a lot of slimes.
Please do something about this.
sincerly Tim.
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Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-29401.
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can confirm this for 1.4.2 on xbox one they say its fixed but that is a lie