I’ve been using for years $bits with streaming operators:

scfifo #(
  .lpm_width ( $bits({>>{array_rd, array_wr}}) )
) inst (
);

Quartus 24.2 decided it wasn’t acceptable anymore and aborts the synthesis with an error:

Error(24461): Verilog HDL error at file.sv(281): stream operands require explicit typecast to be used as argument of system task/function

Why?

Casting this result would defeat the whole purpose of using $bits()…