Green Tint with Resize

[Selur]

Can't play around with Vapoursynth to reproduce the issue without a sample of the source.
Using:

# Imports
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="G:/Hybrid/vsfilters/Support/fmtconv.dll")
core.std.LoadPlugin(path="G:/Hybrid/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# Loading C:\Users\Selur\Desktop\NotResized.mp4 using LibavSMASHSource
notresized = core.lsmas.LibavSMASHSource(source="C:/Users/Selur/Desktop/NotResized.mp4") # 720x480
notresized = core.sub.Subtitle(notresized, "NOT Resized")
notresized = core.text.FrameProps(notresized)
resized = core.lsmas.LibavSMASHSource(source="C:/Users/Selur/Desktop/Resized.mp4") # 640x480
resized = core.sub.Subtitle(resized, "Resized")
resized = core.std.AddBorders(resized, 40, 40)
resized = core.text.FrameProps(resized)
mixed = core.std.Interleave([notresized, resized])
# Output
mixed.set_output()

I see the green tint.
Might be a problem with a resizer. (iirc there were posts over at doom9s about color issues with some resizers but I thought those were fixed)
-> Have you tried other resizers?