In Figjam, shapes can be "free-resized" to accommodate whatever location and contents one would like, without resizing the font - the text re-flows:
Stickies, however, seem to have two shapes available regardless of the content, which then just grow in height as you add more text (or they scale the contents if you resize from the corner):
I would like to simply be able to resize my stickies in a free manner and have the contents reflow at whatever font size I’ve selected (without resizing it for me), just like the shapes. Sure, in some cases I can just use shapes in place of stickies… but I shouldn’t have to.