No serious problems so far, order sizes may have to be readjusted when using percentages.
Personally, I liked that separation of spot and derivates before Unified trading, but this can also be done with a bybit subaccount if needed.
The only one little thing is that it seems to have messed up the portfolio value on the dashboard, seems like it doubled the displayed value since the upgrade.
Do you still see the problem when clicking on refresh balances? Because now you have two accounts with the same balance, I maybe you need to delete them ad re-add as spot & futures