Scene loses proportion after saving and reopening

Hi

I created a scene to use with the animation club at school, and when I reopened it on site the proportions were all wrong. I thought I’d just messed up and taken in the wrong version but checking at home the same thing had happened. I can fix this by rescaling everything and applying the transforms, but when I save and reopen it again it’s wrong. I’ve attached the blend file, and screenshots of what it should look like and how it looks after being re-opened.

There are no errors or warnings when saving

Blender 3.5 on Windows 10

If somebody can please tell me what I’m getting wrong here I’d be grateful…

tia
andy

fourBox_v4_toUse.blend (1.0 MB)


Erase the animation key
If it is still deformed, please enter Transform as same as the image.