How unfortunate for you.
I thought about what my response could be to this predicament. Why have a pocket if it’s sewn? Why tease me in such a way?
Let us go deeper.
Back in the olden days when all clothes were made by hand and custom, basting was left on the shoulder, vents and pockets to ensure clean lines and proper shape upon delivery to the customer. Basting is a loose stitch that is used to put together a custom suit. Even today, you will see this left on high end suits. Occasionally you will also see an unsuspecting customer wearing the basting – how embarrassing!!! Basting is not to be worn but to be taken out – unless you are contesting a fashion statement I was unaware of…
My response to why the pockets are closed (and sometimes the vents as well) are to ensure clean lines and smooth form. Most of the time, there is only hand stitching that keeps the pockets together, so it can be carefully removed.
If you are the type to stuff your pockets with heavy objects then perhaps you should keep them closed as this will ruin the shape of the jacket and make you appear bulky.