Has anyone tried bypassing outstanding receipt and outstanding payment accounts for cash journals in odoo 15? 

Since cash accounts do not need a reconciliation workflow, we have bypassed the outstanding accounts by using the Cash account itself instead of the default outstanding accounts. 

This works well for payments and receipts and we are no longer required to reconcile the cash account. BUT here is the issue: 
When we have two cash journals configured like that (say 'cash' and 'petty cash') there is a serious issue when we do an internal transfer between these two. The issue is that odoo creates a corresponding payment in the other journal automatically (which is good) but the other journal is not posted correctly. 

For example if we send usd 10 from cash to petty cash journal, it creates the other payment of receive usd 10 in petty cash with destination journal as cash. When this auto generated payment is posted automatically, the account that is debited is the wrong one (it debits cash account instead of petty cash account). So we end up with cash debit here and cash credit from the original transfer payment. Petty cash account remains untouched!!