Bug with Tuition Transfer amount and number of dependant children

[EmPe]

I have two children.
1. Son under 18 and
2. Daughter over 18 who is a university student

I should be able to claim number of dependent children as 1 (ON428 Line 74)

If I enter Tuition transfer amount for my daughter, the number of dependent children becomes zero
If I remove the Tuition transfer amount for my daughter, the number of dependent children becomes one

This is a serious bug and will impact claims! No?

[TurboTaxSusan]

Please contact our phone support team at 1-888-829-8608 as they will be able to look through your return with you to figure out what is happening.

[EmPe]

I did call TurboTax support and they were able to help out with a workaround

For some reason we cannot transfer full 5000 (even if the university student income is zero) to a parent. If we transfer a smaller amount ~ 4800 (the workaround), the number of dependant children gets a correct count. The two values are independent of each other and shouldn't be related and so this is a bug