Cant lock-in in rank select. Bug

I was in a rank select and i couldnt lock-in my pick. I spam the "lock in" button but it didnt work.

i picked then at about 5 sec i picked . tried to lock in but it didnt work i spam it like 8 times continuously. The result was a "dodge" causing me to lose 3lp and 5 mins wait. :( Pls fix this bug :(