gameplay, cursor bug

ok so sometimes, most recently with darius, i get a bug that cause the cursor icon to go to the wrong one (like the blade or example) and then i cant attack properly like it says im going to attack with the blade icon but it instead just moves me next to the thing im trying to hit, and it has to sto pand then hit i can fix this ingame by left clicking nothing like the normal grass area but it comes back often and mostly when im fighting other champs i dont know why this happens but mostly with for me