`asp` not respected when `facet.args = list(free = TRUE)`

[katrinabrock]

MRE

This creates a 1x1 square with a length 10 line segment protruding to the right. asp=1 should make the square look like a square, not a rectangle. "A", "B", and "C" have identical data.

png(width = 600, height = 200, unit = "px")
tinyplot(
  y ~ x,
  facet = ~group,
  facet.args = list(free = TRUE),
  data = data.frame(
    y = rep(c(1, 1, 2, 2, 1, 1.5, 1.5), 3),
    x = rep(c(2, 1, 1, 2, 2, 2, 11), 3),
    group = c(rep("A", 7), rep("B", 7), rep("C", 7))
  ),
  type = "l",
  asp = 1
)
dev.off()

Expected behavior

Since the data is identical for each group, facet.args = list(free = TRUE) should have no impact. Different plots should be free show different ranges, but asp=1 should be preserved within each plot.

Actual behavior