Thanks to Scrapheep for this one.
I don’t think this needs much explanation. Either in 9.4 or 9.5, Wargaming screwed up the hitbox of some Live Oaks buildings. But a demonstration will serve better than description:
Basically, what you see here is building collision model (hitbox) not corresponding to the visual one, causing the shells to be blocked by invisible barrier. Usually it’s city maps suffering from these issues, in the past same problem emerged on Ruinberg, Himmelsdorf and Stalingrad had it too (some of these were apparently fixed in 9.5). Meh.