recently noticed, that if you have main tab open on chat windows. and open the chat settings, make any or no changes, hit OK... it deletes the name of the window, leaving it blank. where it used to say Main, now reverts to blank tab. you need to reopen chat settings and rename the chat channel to Main.
also, the save window positions still do not function properly. as when you use a window like opening a backpack sack, it resets later if you do any exchanges with NPC's. and sometimes all you need to do is go fight and loot a mob, and backpack settings are back to default yet again. even sometimes a lapse in time usage causes this also. say you don't open vault/backpack sack for like 15 minutes or so.. later you open it, it's right back to default again.
the silo's aren't much different. one may hold but then a 2nd one opened that was already set, may also revert. unless you close one and reopen it, then open a 2nd/3rd and so on