Can Not See Locations For Unatained Mods In Codex

[Zeritol]

Some time ago (about 2 - 3 weeks is my guess) the ability to tell where mods that you do not have drop disappeared from the codex.  This makes the drop lists in the codex only useful if you want more of a mod, and unhelpful if you need to get a mod for the first time. (OK technically you could read through every enemies' list and find out who drops something, but that is very far from ideal.)  If this is a known bug, that is fine just wanted to bring it to your attention.

[Frostosti]

Many show nothing because they do not drop from monsters and can only be obtained from survival or defence rewards but if i compare my mod list to the wiki i have the same problem as you. None of them show enemies that drop them.