This was a glitch. This does not affect any other portals. The Scroll for Acid Bane 6 no longer teaches Acid Bane 5. In some rare cases, the client could freeze or crash when you were wielding items or otherwise manipulating your inventory. This should be fixed now.
Corpses now decay much more quickly when they are empty.
This minimizes clutter on the landscape, which in extreme cases can cause slowdowns. This change is slight for average treasure, but more significant for powerful treasure. An additional character option lets you turn off most weather effects, to speed up your frame rate. A handful of tweaks were made to rumors, quests, portals, object placement, and graphics. Some chests or other places in the game would stop respawning their items under certain conditions.