[Client] Ranked Inactivity LP Decay Glitch / Bug

Hi, and thanks for taking the time to read this post.

Recently, while finishing a ranked game that I had won, I received a notification that I had been demoted to Gold V due to inactivity. That very week I had over 10 games played.

The game before the one where I received the notification, I had lost and been demoted to Gold V. The notification does not bother me, but the fact that I was missing LP does.

I remember checking that I still had 80 something LP, and that it would only take a game or two to reach my series again, yet the ranked stats showed me at 89 LP after having gained 14 LP.

I took a screenshot of the notification and of my match history. This is the first time this has happened to me, and I have no way of recreating it. (I did use paint to cut out some things unrelated to league of legends, for privacy reasons.)

Thank you for your time C: