I just tried it myself and YES, there is a BUG!!
I tried an income of $175,700 as a single taxpayer, which reduces the taxable income to $163,300, which is the top of the 24% tax bracket. I got $33,272 of tax, which is correct.
then I tried an income of $176,000 as a single taxpayer, which is a taxable income of $163,600 which just tips into the 32% tax bracket . I got $50,458 of tax.
Increasing the income by $300 increases the tax by $17,000!!!! I know this is a progressive tax system, but not that progressive!
That makes no sense!
can someone communicate this to the Lounge Moderator!!!