I am missing a really big one.... when people ar finishing different guild tasks at the same time, they can get "someone else contributed" errors and will miss out on guild task rewards.
This bug is especially big, as a lot of people don't even know it's happening to them, unless they check their rewards against the finished guild tasks.
On monday morning, my wife and i start finishing guild tasks together, with money we saved up during the weekend. We do this on PC.
She does the top 3 tasks, i do the bortom 3 tasks, so we should not interfer with one another.
I got the "someone else contributed" error 2 or 3 times, and got kicked back to the main screen. Checking the roster, we were the only 2 contributing.
When we were done spending around 400k gold each, and checked our mail with guild task rewards, they differed... she had more gems and souls, and i had more keys, for example.
We notice this, because we sit right next to one another.
This might be happening to everyone, they just don't know it....
We will check again monday, and i will take screenshots, if that helps.
Ps, the bug in the list where you have to reboot the game before stat changes due to kingdomupgrades show up, is only on PC.
I verified this after my initial post, with different stats from 5 star kingdoms.