Dispensers facing into nether portals, with lava, water, or powder snow in them will break nether portals when powered. However, a slice of the nether portal will be left over, still lit, and fully functional.
How to reproduce
1. Place a dispenser with lava/water/powder snow facing into a nether portal.
2. Power the dispenser
The nether portal will have a slice of portal tiles left over. This is best observed with a wider portal
Linked issues
is duplicated by 6
MCPE-137036
Water no longer breaking portals correctly
Resolved
MCPE-138245
Obtaining technical blocks in survival
Resolved
MCPE-140644
when the portal to the nether shuts down with water and a dispenser, some portal blocks are still there and the observer does not detect that the portal shuts down
Resolved
MCPE-180623
Nether portal does not fully break when dispensing objects into it
Resolved
MCPE-183976
Can't break nether portal with powdered snow
Resolved
1 more links
Attachments
Comments 4
the bug appears most when the gate is built in the east-west direction but also in the south-north direction. which direction the redstone signal comes from also matters. if you build the gate S-N and the redstone signal comes from S no problem. if it comes from N, the bug will be there all the time.
Confirmed for 1.17.1.