Death Recap

I have been playing League of Legends for quite some time now and it has been a fantastic experience. I have noticed one issue through the past couple years of playing though. The death recap 99% of the time does not inform the player of all the damage received, and who it is received by. i feel as it should show all damage done to the player within a certain time, rather then only 3 damage sources. knowing how much damage is done by who is really useful, as it it helps decide item purchases and how you should adjust in team fights. In the images below, you will see 4 different death recaps which all do not add up to the total damage done said at the bottom. some recaps are 1000 of health short of telling you where the damage was coming from.