When players hit Ender dragon on the ground, they also emit particle effects,The bug I found when Ender hit Ender dragon's last shadow Dragon, this bug still exists today ... This captured photo is difficult to capture, and I hope Mojang can fix this bug.
Thank you for your report!
However, this issue has been closed as Incomplete.
It's hard to tell what you mean exactly from the description, but the dragon attacks should emit particles. (Example bug ticket here.
We are tracking an issue with the Dragon particles here: MCPE-39398
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