No "overview" in post-game results

LoL Version 4.21.14_12_17_19_00

Issue: On the post-game screen, after the "Defeat" we were shown a missing/buggy Overview tab. The Grid & Graph sections were as expected.

Reproduction: 1: Solo queue into aram - notice that the countdown didn't quite last as long as usual, seems like the game started prematurely 2: Play game as normal, is a close game 3: Team defeats our nexus 4: Get the defeat screen, button mash on the Continue button 5: Load into the post-game screen, observe bug