@MaxTax00
Schedule D Instructions heading Specific Instructions
Rounding Off to Whole Dollars clearly states, "If you have to add two or more amounts to figure the amount to enter on a line, include cents when adding the amounts and round off only the total."
2020 Instructions for Schedule D (2020) | Internal Revenue Service (irs.gov)
TT has been claiming that rounding off in 8949 is allowed, but it is missing Schedule D specific instruction. Hope this helps.
