My apologies; form *8453*; form 8949 does not have "[a] box for Form 8949 checked (last box)".
In my repro .tax2023 file that shows the bug I have 8453 with the last entry "checked" and there is no form "8949" in the return. As I said I had deleted all the Sched D stuff (i.e. all the 1099-B's) from the return.
The bug still repros. "Error check" etc all pass without the form (overriding the checkbox, which causes the form to disappear) so that's a work-round.
