UDIM textures are logically arranged in space by XY coordinates in the file name. Until the bug is fixed, this space needs to have power of 2 dimensions. For example this sequence makes a 2x2 grid, so it should work: 1001, 1002, 1011, 1012. If you add an additional 1003, 1013, then you have a 3x2 grid and it won’t work correctly for now. If this is the layout you need, adding 1004, 1014 would make a 4x2 grid which will work again.