Confirmed, and your screenshot is the giveaway. A Chaos Scroll fits ANY equipment, but ours was being put through the ordinary "does this scroll match this item type?" test. That test reads the scroll's id (2049100 gives category 91) and the item's id (Wooden Wand gives 37) and refuses when they differ — and no equipment in the game is category 91, so a Chaos Scroll could never be applied to anything at all. The reference server skips that test for exactly two families: Chaos Scrolls (2049100-2049103) and Clean Slate Scrolls (2049000-2049003). Clean Slates were broken twice over, because they were also being stopped by the "no upgrade slots left" rule, which is the one situation they exist for. Both are fixed. The Chaos Scroll also now actually does something — it re-rolls each of the item's existing stats by up to 5 either way. Before, even if it had been allowed through, our copy carried no stat changes and would have burned the scroll for nothing.

Confirmed — and your screenshot is the giveaway. A Chaos Scroll fits ANY equipment, but ours was being put through the ordinary "does this scroll match this item type?" test. That test reads a category out of the scroll's id (2049100 gives 91) and out of the item's id (Wooden Wand gives 37) and refuses when they differ — and no equipment anywhere in the game is category 91, so a Chaos Scroll could never be applied to a single thing.

The reference server skips that test for exactly two families: Chaos Scrolls and Clean Slate Scrolls. Clean Slates were broken twice over, because they were also being stopped by the "no upgrade slots left" rule — which is the one situation they exist for. Both are fixed. The Chaos Scroll also now actually does something: it re-rolls each stat the item already has by up to 5 either way, and a Clean Slate hands you an upgrade slot back instead of eating one.

[Update] The fix above is written but was NOT applied in this pass — the surrounding code had already moved, so the patch no longer lined up. Staying open with the diagnosis recorded rather than claiming it shipped.

Fixed — and chaos scrolls were not just awkward, they were 100% dead on every item in the game.

Every ordinary scroll is matched to its equip by an id-category rule: floor(scrollId/100)%100 has to equal floor(equipId/10000)%100, which is how a claw scroll fits only a claw. We ported that faithfully but missed that the handler wraps it in an exemption — chaos and Clean Slate scrolls skip the check entirely and fit ANY equip. Their category codes work out to 91 and 90, and an equip's is only ever 0..70, so with the check applied there was literally no item either could ever land on. Hence 'it does not fit it', for everything.

With the exemption in, both needed their real effects, which they also did not have:

CHAOS randomizes every stat the item ALREADY has by -5..+5 each, floored at 0. Stats the item does not have stay absent — a chaos scroll never grants a stat from nothing, so it will not put weapon attack on a pair of gloves. Success stays 60%.

CLEAN SLATE was equally dead and is now fixed alongside, since it is the same exemption. It restores a slot instead of spending one, so it deliberately skips the 'needs a free slot' rule, and it is refused on an item that has not actually lost a slot.

One thing I checked rather than assumed: Clean Slate really does carry a curse chance in the WZ (2/6/10/50% by grade), so a failed one can still destroy the item. That was already right in our data and I left it alone.

On develop as 6afd1717.