incorrect results when "stop_condition" set to volume

[b-lampe]

Summary
When setting the stop condition for a stage to "volume", the simulation stops before the defined volume is reached.

Example
I expect the stage defined with the conditions below to stop when the cavern volume reach 5 million barrels. However, the stage stops after the first time step:

    stop_condition = "VOLUME"  # stop based on cavern volume
    stop_value = 5.*10**6  # 

Environment

• Operating system: windows 11
• Python version: 3.12.4
• Sansmic version: 1.0.7

Additional context
model runs as expected with using "duration" or "depth" as stop conditions.