Not waiting for temperature controller to stabilize

[RomeFallsAgain]

I have a process that has the "Wait for temperature controller to stabilize before beginning a build" checked

Nonetheless, printing begins regardless of the bed temperature.

Once printing begins, THEN the bed is brought up to temperature. Unfortunately, it's a bit late and the first layer suffers some adhesion problems by the time the bed reaches the target temp.

Any idea why Simplify3D is not telling the bed to warm up before beginning the build?

For the record...these lines ARE in the beginning of the GCode...

M140 S[bed0_temperature] T0 ; Heat buildplate
M134 T0 ; Stabilize bed temperature

but notice the variable has not been replaced by the actual value

[RomeFallsAgain]

UPDATE

May have found the issue....
Seems in that layer the Bed got set to T1 instead of T0

There presumably is no Bed T1...only one bed...T0......I think