Is it possible that QB may have some other issue in reports caused by not considering multicurrency transactions, as happens with the cash flow?

Transactions processed in your QuickBooks Online (QBO) account regardless of the currency are included in the cash flow, Rodriquez. I'm here to share some information about this. 

The total amount you see in the Bank Accounts section of the Cash flow page is the sum of the balances of the banks connected to online banking. Those banks that are not connected to your QBO account will not be included in the total amount. 

Additionally, multi-currency transactions will also show up in your reports. Some will add the foreign currency as a suffix (to the Accounts) for easy identification, while others will need to have a Currency column for you to identify it. Here's how:

1. Select the Reports menu and open the report you need.
2. Next, select the Customize button.
3. Then, click the Change columns hyperlink and check the box for Currency.
4. Once done, select Run report. 

To further guide you in pulling up reports to track your cash flow, check out this link: Use reports to track cash flow in QuickBooks Online.

I've also attached this helpful resource that you can use as a guide in case you need to make adjustments to your home currency: Enter home currency adjustments for your foreign balances.

I'm always ready to back you up if there's anything you need to know about cash flows involving multi-currency, please don't hesitate to leave a reply below. Have a good day ahead.