alpha parameter of polys() doesn't work

[dfriend21]

The alpha parameter of polys() isn't working - below is an example demonstrating that alpha works for plot() but not for polys().

library(terra)
#> terra 1.7.65
v <- vect(system.file("ex/lux.shp", package = "terra"))

# works
plot(v, col = "red", alpha = .1)

# doesn't work
plot(ext(v), border = "transparent")
polys(v, col = "red", alpha = .1)

^{Created on 2024-01-29 with reprex v2.0.2}

[rhijmans]

Fixed, thank you.