When posting bank payments/receipts, currently the dimension tag chosen for the posting is also applied to the VAT code and bank's GL account. This results in any budget reports that include both balance sheet and P&L accounts to not accurately show the expenditure/income as the three lines coded to the dimension tag offset each other (we would also never want any VAT nor bank codes to show in a balance sheet report for a budget).
I have never known this to occur in a finance system and it poses many complications when it comes to reporting.
To mitigate this issue, currently we have to create the bank postings, then open them in the transaction browser and edit the postings to remove the dimension tags. This turns bank payments and receipts into an unnecessarily laborious task, especially as these processes are primarily used for many small transactions.