Isometric tile map issue (overlap)

Hi! I’m new at Isometric Tile Maps things… I just cant understand why some tiles just overlap, but others no. And even sometimes overlaps in some places, and others no. What’s happening ?

TileMap - Main is the floor, at layer 5
TileMap - Wall is the wall, at layer 10
Collider invisible sprite at 0.

And Camera:

Unity Version: 2022.3.29f1

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