Rek'Sai not tunneling under wall bug

This gif shows a very longstanding Rek'Sai bug. Sometimes, when Rek'Sai goes to tunnel under a wall, she'll just shove her head against it and go nowhere. The tunnel entrances will show up on both sides of the wall as normal, showing she was intended to go under. But she does not go. This bug has killed me many many times, as well as denying ganks (like in the gif). Riot, can you please take a look at this and try to fix it?