Size issue trying to run unsloth/Qwen3.6-27B-NVFP4 with b12x_attn (fathomless-firmament-ds4-v10 image)

[jeremylea]

(EngineCore pid=152341) ERROR 07-11 20:42:08 [core.py:1243] File "/opt/sglang/ds4-v10/lib/python3.12/site-packages/b12x/integration/paged_attention_scratch.py", line 712, in copy_runtime_metadata
(EngineCore pid=152341) ERROR 07-11 20:42:08 [core.py:1243] self.page_table[: page_table_i32.shape[0], : page_table_i32.shape[1]].copy(
(EngineCore pid=152341) ERROR 07-11 20:42:08 [core.py:1243] RuntimeError: The size of tensor a (4096) must match the size of tensor b (4100) at non-singleton dimension 1

This happens during startup without MTP, but only on first use with MTP.