Fix for tile bug on Minetest 5.5

init.lua

-- Written by appgurueu, licensed under the MIT license
local function patch_tile_texture(tex)
	if not (tex:match"^%[combine:" or tex:match"^%[inventorycube{") then
		return
	end
	-- Prevent Minetest 5.5 from prepending "blank.png^" for 5.4 and older clients which don't support [png
	-- See https://github.com/minetest/minetest/pull/12210
	return "(" .. tex .. ")"
end

minetest.register_on_mods_loaded(function()
	for name, node in pairs(minetest.registered_nodes) do
		local redef = {}
		for _, tile_field in pairs{"tiles", "overlay_tiles", "special_tiles"} do
			local tiles = node[tile_field]
			if tiles then
				for index, tile in ipairs(tiles) do
					if type(tile) == "string" then
						local patched = patch_tile_texture(tile)
						if patched then
							tiles[index] = patched
							redef[tile_field] = tiles
						end
					else
						local patched = patch_tile_texture(tile.name)
						if patched then
							tile.name = patched
							redef[tile_field] = tiles
						end
					end
				end
			end
		end
		if next(redef) ~= nil then
			minetest.override_item(name, redef)
		end
	end
end)