[CLIENT][MAC] Unable to click on shop, "continue", etc + some keys unavailable, in-game.

At times, I cannot click on the shop nor level up a skill. It is the same for the "Continue" button at the end of the game. At the same time, I cannot press Esc, Space, nor level up skills through the keyboard. Skillshots don't seem to always go off either, although I am not sure about this. I can still open, close the chat and type in it. I have no idea how to reproduce it, but it seems to have been happening everytime right after typing something in the chat. After a while, everything goes back to normal (around 3-5min). The frequency of it seems to be random, although it has been happening to me around 7-8 times in the last week. It has been happening since the previous patch (5.5).