Graves bugs - Critting towers and not refreshing true grit.

While messing around with Graves jungle clear in a custom I noticed a few things. Attacking minions (and I assume champions) behind a structure while you have crit chance will let you crit towers/inhibs (not sure about nexus). This is easy to replicate as you just need to get some crit chance align the cast minions behind their tower but in your range and target them over your tower. Due to your passive shots will hit tower and thus enabling crit.

If you for whatever reason purchase a Runaans Huricane on graves True grit (bonus armor and mr from using E) will not be kept while attacking minions however attacking towers will refresh the cooldown. While I don't think it's likely for a Graves to purchase Runaans it can be an issue losing a part of a kit due to a bug.