The quest list on the upper right corner under the minimap can’t list more than 4 quests even though more than 4 are active. The bug is very simple and can be easily replicated, i see no need to document it with screenshots or similar.
No log no bug! 
I think he’ll ask for a screenshot at least
I live how they assume the log records things like this. XD
99% of the time, wide-spread graphical bugs are problems with the design/code, and are not caused by anything in the active game.
Though there’s always the probability of the graphics card trashing something or throwing an error.
9 minutes ago, EndeavSTEEL said:
I think he’ll ask for a screenshot at least
And how to reproduce the bug. 
Just add 5 random quests in a map and you will see it shows only 4. If thats not enough then im sorry 
It was just a joke. I know. Usually don’t remember the 5th task.
Heres the pic
not a bug
Okay.