Anivia and Tristana glitches?

I submitted an email to Riot and the person who responded encouraged me to post here!

I've had a few issues with multiple champions lately with in game bugs and glitches. They happen with both Tristana and Anivia. With Anivia, her Q has a nasty habit of vanishing out of sight but still going off. Unfortunately this means I can't see where the attack ends up and have to just estimate its location before finishing it. It happens on all of her skins that I've played on, including Blackfrost. Its a huge inconvenience when it disappears during team fights, or through minion waves, and it seems to be happening more often.

The other issue is with Tristana's ultimate. Instead of knocking enemies in to walls, it has a habit of sending them THROUGH walls. Particularly Diana. Twice in one game it happened, near red lower jungle, it sent her through Gromp's wall. Then it happened at Dragon Pit, and send her through the wall again. Both times letting her escape fights altogether, which seems a little unfair to me. I don't know if these issues are already being addressed, but they're both issues I keep experiences right now that make playing those champs a little more difficult than they should be. I haven't seen it do this to any champ EXCEPT Diana.