Vanilla standard is to offer the player a choice whether or not they want to give a quest item to the questgiver right now. In OE TG and Ando TG, the questgivers immediately confiscate the items from you.

List of quests where it should be fixed:

• TR_m4_TG_Marug1, "Amulet of Silver Tongue" topic
• TR_m4_TG_Tattara1, "disarm the Tong" topic
• TR_m3_TG_Fentus2, "airship plans" topic
• TR_m3_TG_Fentus3, "Sharai-Saldro's Astrography" topic (already fixed in https://www.tamriel-rebuilt.org/bugtracker/oe-thieves-guild-issues)
• TR_m3_TG_Fentus3d, "Hhontjulf Fire-Mane" topic
• TR_m3_TG_Fentus3b, "deed to a sailboat" topic