Unable to set some Float console variables with Custom CVars

[cest-la-v]

Hi, I'm having trouble trying to set Float console variables with Custom CVars.

Example settings:

[Custom CVars]
; Add Unreal Engine console variables below to be set on startup.
; Format is "CVar = Value". Below is an example.
; r.Tonemapper.GrainQuantization = 0
r.LandscapeLODDistributionScale=5.0 ; some comments
r.LandscapeLOD0DistributionScale=5
r.LightMaxDrawDistanceScale=10.0

Result:

All these three variables end up with updated LastSetBy but not with the correct values as expected.

Here're the description of these variables:

[
    "r.LandscapeLOD0DistributionScale": {
        "Flags": [
            "Scalability"
        ],
        "Helptext": "Multiplier for the landscape LOD0DistributionSetting property",
        "type": "Float",
        "value": 1.0
    },
    "r.LandscapeLODDistributionScale": {
        "Flags": [
            "Scalability"
        ],
        "Helptext": "Multiplier for the landscape LODDistributionSetting property",
        "type": "Float",
        "value": 1.0
    },
    "r.LightMaxDrawDistanceScale": {
        "Flags": [
            "RenderThreadSafe",
            "Scalability",
            "SetByScalability"
        ],
        "Helptext": "Scale applied to the MaxDrawDistance of lights.  Useful for fading out local lights more aggressively on some platforms.",
        "type": "Float",
        "value": 1.0
    }
]

I also tried with Int32 variables and they worked, so I suppose it just won't work on all Float variables or some certain variables?