[CLIENT] No mastery gain from crashed/closed client after game

I will continue to add small screen caps about the progress of mastery points.

While playing a game, doesn't seem to matter what champion, while in-game my client either crashes or I end the process via Task Manager to get better FPS, after the game is over, I restart League of Legends, sign in, check my profile page to see no master gained.

1. Start a league of legends game mode (Game mode that gives mastery points) with a test champion
2. While in-game, alt-tab out
3. open task manager
4. end process LolClient.exe
5. finish game
6. Restart league of legends, sign in
7. Check profile, champions tab, find the test champion that you just played

No mastery points gained from last game played with test champion

Edit: LINK to another bug report about apparent same issue

Edit: May be a visual bug that happened as i did these steps but does not appear to happen again (see attachments)

I will continue to add small screen caps about the progress of mastery points.