The new group selector within the assignment module is not behaving as expected. It is being applied based on the course group configuration instead of the module's group configuration. This discrepancy causes the selector to be displayed incorrectly, either showing up when it shouldn't or not appearing when it should.

Steps to replicate:

1. Create a course.
2. Add an assignment in the course

Scenario 1

1. In the course settings
   • Set the group mode to 'Visible groups'
   • Set 'Force group mode' to 'No'
2. In the assignment settings
   • Set the groups mode (under Common module settings) to 'No groups'
3. Go to the assignment submissions page
   • expected: The group selector is not displayed
   • actual: The group selector is displayed

Scenario 2

1. In the course settings
   • Set the group mode to 'No groups'
   • Set 'Force group mode' to 'No'
2. In the assignment settings
   • Set the groups mode (under Common module settings) to 'Visible groups'
3. Go to the assignment submissions page
   • expected: The group selector is displayed
   • actual: The group selector is not displayed