Step to reproduce:
go to a world
use /setblock command
use replace parameter to replace the block you want it to be placed
Observed result:
after entering "/setblock ~ ~ ~ bedrock 0 replace", there is no more option to enter the block to be replaced.
Expected result:
there should be this parameter "[replaceTileName]" for the block to be replaced
replace is the last parameter and specifies what happens to the existing block in the space where the /setblock command applies. The "block to be replaced" is determined from the specified coordinates.