The problem i find with summoner spells is that whenever the improved summoner spell mastery is upgraded in the mastery page, the summoner spell does not update in-game.

For example, getting Clarity without applying the upgraded mastery, shows that it only gives 50% of its mana to allies, while WITH the upgraded mastery, it still shows that it gives allies 50% of its mana cost, when in actuality it gives 100% of it to allies.

These problems are usually an inconvenience and nothing more, but i would like to see them fixed.