Viktor double upgrade ability hex-core bug

I just played a game as Viktor and when I backed with 2000 g I bought The Hex Core mk-2 straight from the Prototype Hex Core . I then accidentally double clicked E and somehow upgraded the death ray 2. I thought that if I bought the perfect hex-core the problem would resolve but it only allowed me to upgrade 1 ability again, leaving it impossible for me to upgrade my last ability and my ultimate. The passive stayed the first buy-able hex core and didn't change to the mk2.

I then went into a custom game alone and tried the process again, and it worked the same way, I bought a Hex Core mk-2 and clicked E twice again, leaving me the same result of not allowing to upgrade all 3 abilities and leading to it not allowing to upgrade my ultimate.

Please fix this Riot.