The misc quest "Drinking, Stealing, Ranting", added to Roa Dyr in the DoD release, needs some writing style fixes to reduce clunkiness -- currently, it sounds very different from the rest of the game's dialogue.
Many items in Fort Ancylis, Main Keep are unowned, including a full set (!) of master alchemic apparatus around the Alchemist. The number of master alchemist items should be reduced, too. This is too many for a minor alchemist in a small fort who isn't even a trainer.
Teyn dialogue (probably Services, I don't remember, sorry!!) still mentions a travel connection to Seyda Neen, even though that connection was removed.
The Teyn lighthouse quest (TR_m4_T_Lighthouse) is supposed to end once you kill the lighthouse keeper Erethys Omavel (tr_m4_erethys_omavel) by activating journal stage 100. However, to my limited CS sleuthing abilities, it seems that a script to activate Journal 100 upon his death was never added.
Many TR locations do not have any response to the topic "specific place", which is inconsistent with Vanilla. This is particularly frequent in areas modified by the Embers of Empire expansion. These are the affected towns and villages (skipping a few hamlets):
When inside the andas vault near the end of the quest if you summon something at the trigger for tholer andas' dialog it will infinite loop the dialog and you must force quit the game
1. activate the dialog trigger
2. step outside the dialog activation area
3. summon something inside this area or have it run to inside the area
I was specifically using the amulet of shades to summon a bonewalker. This bug is sometimes difficult to reproduce but it is game breaking. It seems you have to be outside the trigger when the summoned thing goes into the trigger.