NASA has done research on exposure to vacuum. Stanley Kubrick consulted with them before making 2001 A Space Odyssey.
https://youtu.be/gpwvJzcfL1w
Contrary to popular belief, people do not swell up and pop like balloons when exposed to space.
I would argue Leia wasn’t dead, merely stunned. She does have the Force you know. Did people get bent out of shape over two similar sequences in Guardians Of The Galaxy?
You should ask for a refund next time. 😛