Assertion `p == derived_partition' failed when encoding

Testing with version: bc876aeb

./avmenc --width=152 --height=184 --bit-depth=8 --input-bit-depth=8 --i420 --ivf --lag-in-frames=0 --disable-kf --cpu-used=7 --min-partition-size=8 --max-partition-size=32 --sb-size=128 --enable-bru=1 --threads=1 -D -q yo.yuv -o yo.av2

av2/encoder/bitstream.c:2734: write_partition: Assertion `p == derived_partition' failed.