[GAMEPLAY] Ionian boots of lucidity having weird effects on summoner spell cooldown.

Ionian boots of lucidity are supposed to offer 10% cooldown reduction on summoner spells.

When starting a game with the Insight mastery, your summoner spells have a 15% reduced cooldown; flash will go from 300 seconds -> 255 seconds, as seen here:

http://i.imgur.com/9XPTArC.jpg

When purchasing Ionian boots of lucidity, your summoner spell cooldown appropriately is reduced a further 10% (255 seconds -> 225 seconds)

http://i.imgur.com/qxQ1tzv.jpg

However, the second you level up, your summoner spell cooldowns increase back up by 10% [notice i have gained one level since the last picture] (flash goes up to 255 seconds from 225 seconds)

http://i.imgur.com/EG9aoXH.jpg

I also learned that if you sell your ionian boots of lucidity, your summoner spell cooldown will go up again (flash goes from 255 seconds -> 285 seconds), which should not be the case when I have 15% reduced cooldowns from the insight mastery

The picture below shows my summoner spell cooldown post-bug, where I have bought the boots and levelled up. The picture after that shows what happens when I sell the boots.

http://i.imgur.com/SgSk374.jpg http://i.imgur.com/JIR4ZoX.jpg

NOTE: This bug MUST exist between the interactions of Ionian boots and the Insight mastery. The bug is not present when you do not have the insight mastery and only have your summoner spells reduced by your boots, as proven below.

The first picture shows the normal, no-mastery summoner spell cooldown. The picture after shows the summoner spell cooldown even after I have levelled up once with the boots.

http://i.imgur.com/TiJ9shw.jpg http://i.imgur.com/Hwsk96r.jpg

TL;DR

1. Get Insight mastery (reduces summoner spell cooldowns by 15%) (flash 300seconds -> 255 seconds)
2. Buy Ionian boots of lucidity (reduces summoner spell cooldowns by 10%) (flash 255 seconds -> 225 seconds)
3. Level up once - your summoner spell cooldowns will go up by 10%. (flash 225 seconds -> 255 seconds)
4. If you sell your boots, your summoner spell cooldowns will go up again to a weird, not-possibly number (255 seconds -> 285 seconds)