A few things:
While cutting, partially or massively incorrectly cutting a fabric seems to softlock the game, making it impossible to progress. Can't access settings while the scissors are out.
It seems like right clicking to cancel actions is a lie; I cannot cancel cutting or stitching.
Strangely, it seems like you can sell stuff at a loss? Had a cotton T-shirt request ($20 in materials) in which its max profit was $15. Is this on purpose?
The tasks are given out at random, which means sometimes all of the materials x2 are not something you can buy.