Pillager outposts generate several substructures as I saw in every Java seed.
Steps (for 1.18):
Enter the seed 100.
Enter the command "/tp -391 105 1032" or "/tp -983 98 824"
You will see the pillager outpost generating several substructures.
Expected result: Pillager outposts should generate substructures normally.
Observed result: Pillager outposts generate several substructures.
Can confirm; pillager outposts are generating with many more substructures in 1.17 than in 1.16.5. Came across this while trying to reproduce MC-224491.