In Odoo V18, when multiple Manufacturing Orders (MOs) are worked on at the same workcenter, the system may log the total time equally across all MOs. Odoo does not automatically divide time between MOs.

To resolve this:

1. Manual Allocation: Adjust time manually for each MO based on work done.

2. Custom Development: Create a custom module to automatically divide the time.

3. Workcenter Configuration: Adjust workflows to better track time spent on each MO.

These methods can help accurately allocate time across multiple MOs.