The president signed the law on March 11, but the IRS didn't issue instructions for making the change in tax returns until April 9.
There have been several TurboTax updates since May 31. If there were bugs in the May 31 update, they might have been fixed in subsequent updates. You should update your software again and see if it affects your tax return. Save a PDF of your tax return before you update, so you can compare.
