glass or no glass?
There are a number of faults like this in Titanic (which we shall cover later), but this is one of the most apparent. When Rose breaks a window in the lower decks with an axe, she makes sure to remove all of the glass from the frame so it doesn’t cut her when she walks through.
So far, everything makes sense, right? However, a few seconds later, we see that some of the glass had found its way back onto the window she broke. This minor blunder drew a lot of attention from onlookers.