Reksai tunnels cause my mouse to disappear

So i was playing a game on my main account, on which i bought rek'sai recently. I bought reksai on my alternate low level account to test him out, and noticed an error towards the end of a bot game where my mouse pointer disappeared upon attempting to use a tunnel, but i was still allowed to click with my mouse. I thought nothing of it and moved on to buy reksai on my main lvl 30 account and played her for the first time in ranked, and proceded to start playing. As soon as i tried to use the tunnel, my mouse pointer bugged out. I went back to my alternate account to see if this was maybe a coincidence, fired up a custom game with reksai and it happened again. My issue is that i had to restart my computer each time, and since the second time i noticed this, i had to leave a ranked game, which is affecting not only my lp, but my normally good record of not leaving games. What should i do maybe to proceed further with this, and also is this going to affect my playability with a "meta" champion im trying to pick up.

edit i went back on my main account after a reset of my computer again, and fired up one more bot game to be sure, and it seems that my multiclicking the tunnels seems to set this bug off, so if i only click the tunnel once i will be ok

edit 2, i tried the support for mouse disappearing and it may have worked, but im still not gonna play her anymore in ranked games.