If double clicks champ in champ select, glitches

When you double click on a champ, it sends an error about choosing the champion and we click ok (at this point the OLD champ is shown as selected).

When the game begins, it actually says that the NEW champ was selected.

Example, I select , double click , and the game shows I am still using . But when game starts, I play .

Using MacOS (10.12.6 Sierra) on a MacBook Air. Don't know how to check the client version, but it just patched (as always) [+8 GMT - Apr 23 8:30pm ].