Don't push player out of item stack nodes

docs/issues-game.txt

@@ -9,10 +9,10 @@ ISSUES-GAME: Gameplay-affecting issues
  #    #  #       #    #     #    #       #       #   #   #    #
   ####   #        ####      #    ######  ######  #    #   ####
 
-- Unconfirmed: bug involving a player dropping all inventory into
-  a narrow vertical shaft (on VE-NC server) and having items cycle
-  indefinitely without settling to a steady state.
-  https://discord.com/channels/507234450615042048/507234451085066248/901132356977578044
+- Hints for new anvil system
+	- Test/fix hints for affected crafts
+	- Hook in recipe after() for discovery for general anvil uses
+	- Add hints to try each anvil type
 
 - Shelf recipe (and any other 3x3 recipe) reform
 	- Add a "shelf frame" node made from wooden frames
@@ -31,6 +31,11 @@ ISSUES-GAME: Gameplay-affecting issues
 - Lode prills should be able to drain from glowing ore into
   glass cases and crates
 
+- Unconfirmed: bug involving a player dropping all inventory into
+  a narrow vertical shaft (on VE-NC server) and having items cycle
+  indefinitely without settling to a steady state.
+  https://discord.com/channels/507234450615042048/507234451085066248/901132356977578044
+
 - Fix crappy sponge death mechanic
 	- Remove special treatment of glass case and glass nodes
 		- May need to find a new use-case for glass case?

mods/nc_player_setup/step_pushout.lua

@@ -17,16 +17,22 @@ local function normalbox(box)
 	if not box then return true end
 	if type(box) ~= "table" then return end
 	if box.fixed then return normalbox(box.fixed) end
-	if #box == 1 then return box[1] end
+	if #box == 1 then return normalbox(box[1]) end
 	return box[1] == -0.5 and box[2] == -0.5 and box[3] == -0.5
 	and box[4] == 0.5 and box[5] == 0.5 and box[6] == 0.5
 end
 
+local function ispushout(def)
+	if not def.walkable then return end
+	if def.liquidtype ~= "none" then return end
+	if def.groups and def.groups.is_stack_only then return end
+	return normalbox(def.collision_box)
+end
+
 local solids = {}
 minetest.after(0, function()
 		for k, v in pairs(minetest.registered_nodes) do
-			if v.walkable and v.liquidtype == "none"
-			and normalbox(v.collision_box) then
+			if ispushout(v) then
 				solids[k] = true
 			end
 		end