OOPath does not work with "pull only" queries. Pull only queries should have non-reactive behaviour. However, if OOPath is present in the query, then they behave reactive. See test [1]. Here is the same test which does not use OOPath [2].

[1] https://github.com/jiripetrlik/drools/commit/85baf6c8fc5c518d92365c963433c4194001bf0b#diff-3a6e149ca8345104c4b5bd9991d55383R184
[2] https://github.com/jiripetrlik/drools/commit/85baf6c8fc5c518d92365c963433c4194001bf0b#diff-3a6e149ca8345104c4b5bd9991d55383R237