Impacted versions:
At least version 10, version 11(Can only re-produce the problem sometimes)

Steps to reproduce:
Please see this screencast recorded on odoo runbot.
https://youtu.be/cSPQvp9jQJc

Current behavior:
When users search by account in Journal Entries List View. A special value "dummy_account_id" is set in context, in order to facilitate search by account on account.move level.
With this context value , when users create a journal entries, the system will add default value before the creation.

https://github.com/odoo/odoo/blob/fc69b37cf710623ea215cd085e998679d8c50985/odoo/models.py#L3802

This method will set "dummy_account_id" to the previously searched account in vals.

Then the system continue creating account.move and related account.move.line records.
It is fine until the system run this:
https://github.com/odoo/odoo/blob/fc69b37cf710623ea215cd085e998679d8c50985/odoo/models.py#L3830

Since "dummy_account_id" is related field, and it now has value. The system will change the first related  account.move.line record to dummy_account_id.

Eventualy, the account is wrongly set to "dummy_account_id".

Expected behavior:
This is a feature which will fill the form field value with searched value for users. But the journal entry creation should not be affected by dummy_account_id, since it is only for searching purpose.

@Yenthe666 Would you please review this issue and help to bring related odoo staff to this issue?
'partner_id': line.partner_id.id,
                'partner_name': line.partner_id.name,
                'currency_id': (line.currency_id and line.amount_currency) and line.currency_id.id or False,
            }
            debit = line.debit
            credit = line.credit
            amount = line.amount_residual
            amount_currency = line.amount_residual_currency
            
            if line.account_id.internal_type == 'liquidity':
                amount = abs(debit - credit)
                amount_currency = abs(line.amount_currency)
            
            target_currency = target_currency or company_currency
            line_currency = (line.currency_id and line.amount_currency) and line.currency_id or company_currency
            amount_currency_str = ""
            total_amount_currency_str = ""
            if line_currency != company_currency and target_currency == line_currency:
                
                
                
                
                total_amount = line.amount_currency
                actual_debit = debit > 0 and amount_currency or 0.0
                actual_credit = credit > 0 and -amount_currency or 0.0
                currency = line_currency
            else:
                # Ei
                #  - 
                #  -