both key and value need to be expanded for tables.

src/base/detoken.lua

@@ -135,10 +135,18 @@
 
 		function recurse(value)
 			if type(value) == "table" then
+				local res_table = {}
+
 				for k, v in pairs(value) do
-					value[k] = recurse(v)
+					if tonumber(k) ~= nil then
+						res_table[k] = recurse(v, e)
+					else
+						local nk = recurse(k, e);
+						res_table[nk] = recurse(v, e)
 					end
-				return value
+				end
+
+				return res_table
 			else
 				return expandvalue(value)
 			end