Melons/Pumpkins won't grow if you place a block directly above the stem now whereas they could before the update. A quick gamerule change to randTickSpeed = 4000 will show you this.
(Couldn't find this bug when I searched)
MC-135608
Melon/Pumpkin wont grow
Resolved
Duplicate
0
Thank you for your report!
However, this issue is a Duplicate of MC-132351.
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