About what you mentioned in the description, my game is a godot 4.3 game that features a size changing physics object and it works just fine, one thing to note is that in godot, you aren't supposed to scale physics objects direcly, instead you can change the paremeters of the shape resource of the collision shape and scale the rest of the child nodes, if you want more clarification don't be afraid to ask!
Viewing post in Matter of Size jam comments
Hi, sorry for taking so long to reply
I don't know your comfort level with godot and explaining everything from scratch would take a whiiiiiiiiiile, especially in comment therads like this.... if you reeeeeeeeally want a full setp by step explanation i might do it through discord, my discord is tameno_