T_De_SetInd_I_FloorMetal_01 has collision only on one side. Meaning that player can get stuck inside the mesh, and can jump through it on one side, and cannot pass through the other. These are used to detail walls or be used as windows sometimes. So the fact that it is not limited to being just for floors is an issue.
The velk have a script to detect the grievous crime of attacking/killing them. Unfortunately the container it uses get locked with a level (100) higher than the designated Open spell can open meaning no crime is ever detected. Solution: lower the lock level. Container is missing ownership, but failed lockpick attempts not being crimes was also an openmw engine bug
TR_m3_Valvramu Ullev has a "thanks for doing the quest" type response for TR_m3_Do_Velk that's improperly filtered. It shows up even when the player declines the quest.
This is the compiled addon for Tamriel_Data v7 which is not yet released. It is not Tamriel_Data itself, but the files and assets that will be merged with it during its next release cycle.