Update thinks I'm changing a partition key when I'm not, in very narrow circumstances

When I try to update non-partition-key fields in a table that has a partition key, and the update query includes a WHERE EXISTS... clause, I get the error message about not supporting update on partition keys. This isn't blocking my development and it seems very... specific, but I do think it's incorrect behavior so I wanted to mention it here. Here is the smallest reproduction code I could come up with (I tested it with the vec0.so from sqlite-vec-0.1.7-alpha.9) ```sql .load ./vec0 CREATE TABLE images (id INTEGER PRIMARY KEY, orphaned_ts INTEGER); INSERT INTO images VALUES (1, NULL), (2, 1234567890); CREATE VIRTUAL TABLE embeddings USING vec0 ( id INTEGER PRIMARY KEY NOT NULL, image_id INTEGER, is_orphaned INTEGER NOT NULL, image_kind INTEGER PARTITION KEY, embedding_vector float[4] distance_metric=cosine ); INSERT INTO embeddings (image_id, is_orphaned, image_kind, embedding_vector) VALUES (1, 0, 1, vec_f32(zeroblob(16))); INSERT INTO embeddings (image_id, is_orphaned, image_kind, embedding_vector) VALUES (2, 0, 1, vec_f32(zeroblob(16))); -- Works: UPDATE embeddings SET is_orphaned = 0 WHERE is_orphaned = 1; -- Fails with "UPDATE on partition key columns are not supported yet" -- even though is_orphaned is not the partition key: UPDATE embeddings SET is_orphaned = 0 WHERE is_orphaned = 0 AND EXISTS (SELECT 1 FROM images WHERE embeddings.image_id = images.id); ```