Big Dripleaf can’t be placed on Pale Moss, but Small Dripleaf can be.
I assume this is a bug/oversight as intuitively both types of Dripleaf would be able to grow on the same organic blocks. From a gameplay perspective fixing this allows for more creative block choices
We're tracking this issue at MCPE-190919, so this report is being resolved and linked as a duplicate.
That report has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked report.
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