When I play Amumu with a smite, since patch 4.20 I get a very small flickering blue line from the smite summoner icon (right-of-the-middle bottom of the screen) to the top left of my screen, frequently flickering and moving a little bit to the right and then back again. Did not test it with other junglers yet. Did reload my client, did not fix it.
I am afraid I did not get a screenshot.
Addition: it happens only when it is on cooldown.
When I play Amumu with a smite, since patch 4.20 I get a very small flickering blue line from the smite summoner icon (right-of-the-middle bottom of the screen) to the top left of my screen, frequently flickering and moving a little bit to the right and then back again. Did not test it with other junglers yet. Did reload my client, did not fix it.
I am afraid I did not get a screenshot.
If you are using Intel graphics, updating to the latest version fixed it for me.
I recently had to RMA my Nvidia card and as soon as I started using my Intel graphics I noticed this.
I used the Intel Driver Update Utility to find and install the latest driver.
Once I went back into the game I no longer had the blue lines after using smite.
Hope this helps!
FIX ------
UPDATE VIDEO CARD DRIVER.REPAIR AND REINSTALL DOES NOT WORK
