There is some issue with nether wart in mcpe. When I tried to harvest fully grown nether wart, it just gave me one wart, instead of 2-4 warts.
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It is not resolved. In 0.15.3 the problem persists...

It is not resolved. In 0.15.3 the problem persists...

This issue was marked as Duplicate of MCPE-11796. MCPE-11796 is still open so they are aware that the issue is still not fixed.

This issue was marked as Duplicate of MCPE-11796. MCPE-11796 is still open so they are aware that the issue is still not fixed.

This issue was marked as Duplicate of MCPE-11796. MCPE-11796 is still open so they are aware that the issue is still not fixed.
It is not resolved. In 0.15.3 the problem persists...