The problem with glued arms is that, Bioware made elf chest really slim (to slim) and then didn't made enough work on armor models to accommodate it. The just slim down the human version a bit and that doesn't work . For some they didn't do even this.
Anyone with the Dragon armor(the one you get for delux edition) can check this out- get the armor unequip it, see how you chest looks and then equip it and see that this armor uses human level chest proportions BUT your arms don't. As such the clip bad in to chest.
The same thing happens with qunari but its flipped, they have very brode chest and arms and that is why they can't wear many armors in game. You can even see what some armors human/elfe/dwarf specific would look on a quanari if he could wear it(probably a bug) by going to a crafting table, some rogue armors, the arms just float in air not connected to chest (looks even worse or as bad as elf glued arms).
So yeah imo they knew what was going on, with small number of armor selection for qunari AND glued Elf armor problem. And they could work more on armor models to fix it BUT they wanted to ship it now because of one reason or another (like knowing they will get GOTY, did you see the acceptance speech? the knew long ago they will get it).