When we create a normal portal in the overworld with no corners filled with obsidian, enter the nether and we will see that all corners are filled with obsidian. Same with big portals; if we create a big portal(suppose 8 by 8) in the overworld, the portal in the nether will be the default nether portal. If we build a default nether portal and enter the other dimension and break the corners off the portals, the corners would still be there in the previous dimension.
MCPE-83078
Nether portal frames not working properly.
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
This is how it has always functioned across both Java and Bedrock. The resulting portal is always the default size, if you wish to have a bigger one you need to mine and recreate it.
As such this would be considered a Feature Request which we don't track here on the bug tracker.
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