All buried treasure maps point to same treasure

^{Description update from MCPE-80902:}
I found in total 8 maps on my world and all pointed the same treasure even the one map I found 5000 blocks away

Steps to Reproduce:

1. Find any underwater structure (except portal)
2. Get the treasure map (if there is one) and load it so the "X" appears
3. Repeat the same thing in any structure in any ocean as far as you want

Observed Results:
The map always points to the same "X".

Expected Results:
The treasure maps should be different (especially if there are found very far away).

Screenshots/Videos attached: Yes (The drawn picture shows where the map was found and where the "X" is marked.)

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Original Description:
This issue appeared for me with the 1.16.0.63 Bedrock edition release but appears similar to MC-10802 in the Java edition.  Treasure maps worked fine for me in 1.16.0.61.

All buried treasure maps, no matter where they are found, lead to the same place: in my case I found four maps at approximately 1000 blocks from the treasure, one map at 8000 blocks, and three maps 18000 - 20000 blocks away.