Angles entity keyvalue doesn't take into account "angle" (yaw only) keyvalue.

[Bluespark99]

If an entity has an angle keyvalue (and doesn't have an angles value) then its yaw will be determined by angle which isn't reflected in the angles keyvalue which is displayed in the default entity attributes window. In this case angles always the inferred/default 0 0 0 value unless explicitly set in the entity. This means that unless you check all your angle-sensitive entities in Raw Edit mode you may miss the true yaw angle and instead see the misleading 0 0 0 value in Angles.
If angle keyvalue is parsed in the entity then that keyvalue should either be displayed under Angles as an additionaly keyvalue or the angle keyvalue should be transposed to the yaw of the displayed Angles. Or some other solution.