[CRASH] Hextech crafting crashes LoL client window

An example of how it happened.

1. In Profile champion tap scrolling through avalible champions.
2. Click the hextech crafting icon on the top right of LoL client.
3. The client window crashes and disapear without any warning windows.
4. Open window task manager with crtl-alt-delete. Check the Proccesses tap.
5. All 3 LoL ".exe" (LoLPatcher.exe; LoLLauncher.exe; LolClient.exe) is still running, yet the client window has disapeared.

*Do not seems to happen everytime, the exact process of reproducing the bug is unknown to me. But it has happened at least 3 times already.

Current temporary fix.

1. End process of LolClient.exe in window task manager.
2. Restart LoL.