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Liquid simulation, cache type "Modular", forgets effectors after "Stop" and "Resume"
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System Information
Operating system: Ubuntu 18.04
Graphics card: irrelevant

Blender Version
Broken: 2.83 Beta 8cb10c124efe 17 Apr 2020

Short description of error
Under cache type "Modular" (which was the standard workflow in 2.82) resuming a simulation forgets all effectors.

Exact steps for others to reproduce the error

Note: because of T75850 the order of operation here is fundamental to reproduce

  • Default file. (Activate X-Ray)
  • Default cube: Add: Fluid > Effector
  • Add Plane. Move up Z +2.
  • Add: Fluid > Flow > Type Liquid; Flow Source > Is Planar
  • Add new cube at origin. Scale up by 2.5.
  • Add: Fluid > Domain > Type Liquid
  • Cache type: Modular. Frame end: 10
  • Bake Data
    • The effector is correclty taken into account
  • Cache frame end: increase to 20
  • Resume
    • The effector is ignored from frame 11 onwards


This is probably related to T75850.

Both bugs make the Liquid simulation totally unusable in a interactive way.