I have the same error which I confirmed using StudioTax2019 (each year I confirm the accuracy using StudioTax). A couple errors, actually.
The amount from a T3 is shown correctly on the worksheet supplement to T2209. In my case $66.87
On line 43100 of the T2209 it shows as $40.25, for no reason. This is lower than the computation for the tax credit which is a percentage of the tax actually paid (the lower of the two, so you can guess what's lower - the $40.25).
Clicking on the amount in T2209 opens the worksheet (where it is correct, e.g. $67.87). Clicking on the amount in the worksheet opens the T5 entry form. The problem is, the amount was entered on the T3 entry form, not the T5, so there's your second error. Turbotax opens an entry form for a T slip that doesn't have this income.
Suggestion - download the local software version of StudioTax2019 and use an application that works.
