Reproduce:
step 1: set up observer point to portal.
step 2: light up portal using Flintstone.
step 3: active dispenser with water bucket inside to break portal.
Expected result:
Observer send signal when portal is activated and broken.
Actual result:
Observer only send signal when portal is activated.
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We're tracking this issue in MCPE-130935, so this ticket is being resolved and linked as a duplicate.
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