Problem
There are a few quirks on the frictionless ice level that can qualify as bugs. These are the following:

1. The PC can auto-pickup items as he travels through D:49's ice, potentially allowing him to pick up many heavy items (or even his whole inventory, previously dropped) as he slides by the level.
2. Any monster created from figurines, and djinns from non-blessed RoDS (wishing for a djinni doesn't work), aren't impaired by D:49's ice.
3. It's possible to get stuck forever in D:49 if the player steps on a (self-made) web. He can't destroy the webs by moving in any direction since the ice is too slippery, and zapping a wand of fire at the PC's tile won't burn the web he's on.

Proposed solutions:
1. Auto-pickup shouldn't work when the PC is sliding through the ice.
2. Scrolls of familiar summoning and wishing for monsters doesn't work on this level, so figurines and rings of djinni summoning shouldn't be operative either. (There are better places to make friends and wish for things!)
3. Easy but effective solution: don't let the corresponding wand or spell create any webs there. Monsters can't be brought there, and after point 2 is fixed there'll be no way to get spiders on this level, so the web problem is solved.

How to reproduce it
Point 1
1. Create the following definition with the = command:
2. Make sure auto-pickup is enabled using Ctrl+A.
3. Shoot a few missiles at the right side of the screen to get halfway through the bottom corridor.
4. Drop your whole inventory (:d, then +), and shoot further missiles at the left side to get back where you stood.
5. Repeat step 3, but try to pass over the items you dropped before. Watch your PC take the time to stop and pick up everything he had, then resume sliding.

The other two should be self-explanatory.

Notes
See above.