No, this problem really exist and it’s related to provisions counter or provisions itself.
This is how to reproduce:
1. enter a Town
2. enter Market
– here you can actually make any purchases except for provisions and it works as intended, but take note of money –
3. Buy any provision market had itself (you didn’t sell it)
4. counter didn’t update, but crowns deducted
5. Buy one more provision
6. counter updated, but show number related to entry #4
7. exit Market
8. counter updated, now it shows real amount of crowns, related to entry #6.
You also can simply buy something else instead of doing entry #7, but take note of crowns cost of item and amount deducted.