Id say it depends.
Lets talk half pass left F-X
Movement accurately ridden F-X.
Scenario 1 - horse puts his head straight in the air and is hollow entire time. Thats a 3 for me. (Connection and relaxation)
Scenario 2 - horse’s haunches lead or trail a bit - maybe a 5.5 or 6 depends on how long. A lot - then 5 or 4. (Straightness)
Scenario 3 - horse loses energy in movement - 6 to 5 to 4 again depends on degree ( Impulsion)
Scenario 4 - Angle or bend change slightly - down a half point. (connection)
Scenario 5 - horse bops into canter for 1 step then back to good half pass - down a point or more (loss of rhythm)
All problems with the training scale. But to be a weakness in the training scale, vs a momentary weakness in the training scale,
they need to persist through test. Impossible to answer question.