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    • November 8, 2025 at 2:18 pm #5874
      Mdg RkbMdg Rkb
      Participant

      Hello.

      While building a Gantt chart I notice the start date for a task with multiple predecessors with finish to start connection type is not calculated correctly. Task ID 104 has predecessors 38, 63, and 102. Task 63 ends on Nov 28th, but task ID 104 start date is calculated at Nov 13th. Is this a bug or am I missing something?

      Thanks

      Screenshot here:
      https://drive.google.com/file/d/1UeK6RM2qkr9_Uy43UCvXa07DuDSG7s2D/view?usp=sharing”

      Predecessor Finish to Start issue

      • This topic was modified 6 months ago by Mdg RkbMdg Rkb. Reason: image was not displayed
    • November 9, 2025 at 3:19 am #5879
      Project_LibreProject_Libre
      Keymaster

      The Crititcal Path Methodology is correct. However, if you have a constraint such as “Must start on” or Start No Later Than…. it will over-ride the calculation. Also , if a task is moved …. it creates and Actual Start. A lot of people move a task and the actual start will anchor the task regardless of the precedence relationships.

      That is the same on the Cloud AI version but we have re-written the algorithm and it is more efficient but calculates the same…

    • November 10, 2025 at 1:09 pm #5898
      Mdg RkbMdg Rkb
      Participant

      Hello.
      Thank you for your reply.
      I don’t believe this task has any such constraint. You can see the Constraint Type column is As Soon As Possible.
      What other fields should I check?
      Thanks

      PS. The post title is wrong, it is Finish to Start predecessor connection type, as shown in the image.

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