The most likely culprit is Screen 12.

Check your entries under the Foreign Tax Credit section and make sure you have entered -1 for the line "Precentage foreign (.xxxx) or amount if different - Capital Gain Distributions".

If you have input for the other lines (i.e. Total Ordinary Dividends and Qualified Dividends), Lacerte (and ProConnect Tax for that matter) tends to treat a blank as 100% and the way to avoid that is to enter the all-powerful and magical -1.

If you already have -1 for CGD but yet that isn't fixed, check Screen 35.1.  Under the Gross Income Within Country section, make sure you have the correct adjustments and/or overrides for CGD.