EDIT: Not a problem.  The ones I was looking at had damage and will no longer stack.  Probably normal...


The default stack size may have changed but supposedly is 20 for both vertical and horizontal embrasures.  I have them in the config as:

   "Metal horizontal embrasure": 20,
   "Metal Vertical embrasure": 20,​

...which I believe is the default.  I tried adding them with the long names via the command line, and that was accepted.  On reload, those went away.  I still cannot stack these, so perhaps the game changed for these items.