Studios could get weird where title sequences on widescreen movies are concerned when they reached home video. Squeeze the original so no text gets cut off, but make the actors look thin, or use a textless version intended for making foreign release prints with no thought to matching the style of the theatrical titles. I know on my old pan and scan Raiders Of The Lost Ark LD you can tell it’s video generated text over the opening footage, which doesn’t look like the original theatrical lettering.
In the rare instances a title sequence was letterboxed in early home video or on tv, artwork would be used to conceal the black bars.
Maurice Binder got so fed up with seeing his intricate James Bond title sequences get mangled on tv, that he would create separate 4:3 versions in the Roger Moore era.