Hi there, thank you for raising this! The team is working on addressing this issue. There is a work around if you want to carry forward your Quebec donations:
1. Continue with filing your federal (Canadian) return but NOT your Québec return with your donations
2. Once the federal return has been filed, go back to your Donations and remove the amount you've entered and file your Québec return.
3. You can claim the amount you removed next year.
Hope this helps! Good luck!