Platinum used on switch being deducted on other accounts and vice versa

[Greyknite]

Switch plat and trading is suposed to be separate, right?

My switch account had a diferent amount of plat from my Ps5 account and i acumulated both amounts through playing them while seperated, so i assumed this was correct.

But i used up my switch plat to keep playing on my Ps5 and my Ps5 plat was used as well.

For reference i used it all on a deluxe skin and two syandanas, all three were not tennogen so they caried over, i had about 207 plat on switch and about 180 on Ps5, after leaving my switch  wallet at 1 plat my Ps5 wallet is now 0.

Ive heard others say it happened the other way around too.