Multiple Bugs(what I have found)

A list of bugs I have found so far:

Loading screen bug: One that seems to have gotten less attention though I see people talk about it and have experienced it myself multiple times. Basically while loading into a game you will get stuck 1-100% and the game will stop responding.(Need more info, is this a result of multiple games played? Restarting client seemed to reduce the likelihood of this happening)

Carousel Bug: At the start of the game players can walk through the barrier and pick a unit while others are locked out. Another bug if you alt tab at the right time and tab back in right as the carousel begins to appear you can see the units and items before they appear for a moment.

Unit switching bug?: Only one occurrence of this, that I have experienced at least. It occurred two round before the second carousel, I traded a Graves in for a Lucian right as the round was about to begin. I had two slots available and did not get the second unit in, however instead of trading Lucian for Graves. Lucian disappeared and Graves and Kassadin who were on the bench were put in automatically. After the round Lucian was not on my bench nor the item that was on him. Then for some reason after the second carousel he reappeared on my bench. (This game I had a loading screen bug, got 0 items on creeps and lost Lucian with items for a few rounds)

Not so full house: Very rarely the carousel will appear with a unit missing, leaving a gap in the ring. I am not sure what causes this bug.

AI Pathing bug: If a unit does not have a path due to being blocked at the start of a match the unit will not target a new unit until the first one has died. Even if a path is created by units moving out of the way. This also occurs in regular fights where a melee unit will have it's path cut off and the AI will not be able to determine a new path and will just stand in place for the remainder of the fight or until the unit it was targeting is dead. (for the second one this usually happens when you are winning the fight, so most people just see the unit stand there for the rest of the fight instead of resetting on unit death)

Mana Overwhelming bug: If you give a unit to much mana compared to their mana pool they will not use their ultimate(due to a global cooldown?) instead they will attack, their mana bar will reset to the amount it was before then they will cast.

For example, if you give Lucian Archangel's Staff which resets his 35 mana pool to 20 after he casts and Spear of Shojin, he will cast his spell, go to 20 mana, attack, not cast but use his mana, attack again(mana goes back to 20), then attack again for the cast. So instead of attack, cast, attack, cast. He will attack, cast, attack, attack, attack, cast. (Yes I know he does not gain mana from the two attacks he uses from the cast, and they are not included in the attacks he needs). This seems to happen on champions with small mana pools, once again possibly due to a global cooldown of their casts.

Double tap bug: If a unit dies from the auto attack that fills up a units mana, very often the unit will use it's cast on the already dead unit.

Added: Ninja Assassin bug: When running 6 assassin's and 4 ninjas(possibly with less) Even if a unit is not invisible the enemy comp will remain in place until your assassin's jump on their front line. Rather than moving towards your bait/tank.

Not bugs but could be fixed:

Item resource dump?: Items and sometimes units will appear slightly off screen in a pile. You cannot pick them up or use them but you can see them. Also sometimes when you finish off another summoner some of their units will remain on the bench facing backwards(this happens randomly, not sure what causes it).

Item Snapping: Sometimes when placing an item on a unit in the backrow, even if you are above their model, the item will snap to a unit on the bench. You then have to sell the unit on the bench to get the item back.

Sound spamming: Riot, you gave little legends voices. Put them on a delay. No one wants to be waiting for people to get their items from the carousel while one or more players spams their little legends noise.

Little Legends have Collision?: Yes you could argue that body blocking is a legitimate strategy, and yes the people that are behind need every advantage they can get to come back. But giving players full items/better items then giving them the chance to be a goaltender and push you into another unwanted item, or having people push you out at the start of the game can be kinda tilting. Instead of who spots/runs to the item first. It is who can push everyone out of the way first. It's like picking teams for kick ball and the leader who gets to chose first is the one that shoves the other one harder. Seems like a slightly toxic layer of strategy but who knows maybe in the long run it will just be accepted as part of the game.

Information: I know riot has already said they are adding this to the UI. But clear displays of damage information is really needed. Sometimes your units just die and you have no idea what happened. This is important, it let's us adjust our strategy accordingly. Should I move my units around, do I need more items on my tanks, ect. To decide this, we need to know what killed everything, which with a dps meter this will become more clear.

Cast delay: This is a tricky one because I am unsure if it is intended or a product of AI calculations. Basically after casting a spell the unit will take a moment before it returns to attacking/moving. As if their was a recoil from them casting their spell. This might just be a result of code telling the auto attack timer to restart after a spell cast.

Edit: Also if you see errors, have more information, or accurate information on another bug I will add it to the list.