geom_strip has issues with label and angle="auto"

[Thomas-Hagan]

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I am having issues labeling a paraphyletic clade using geom_strip. I want to have the label of the clade rotate with the position of the strip, as is possible in geom_cladelab by using angle = "auto". This is supposed to be possible in geom_strip also, but currently produces an error message.

Reproducible Example

library(ggplot2)
library(ggtree)

tree = rtree(10, rooted = TRUE, tip.label = C(1:10))
test = ggtree(tree, layout = "circular", branch.length = "none",
             ladderize = TRUE, size = .8) + 
  theme(legend.position = c(0, .82),
        legend.text = element_text(size = 8),
        legend.title = element_text(size = 8)) +
  theme(plot.margin=unit(c(.1,1.5,.1,0),"cm")) +
  geom_strip(1, 2, label = "Test Label", color = "red", angle = "auto",
             horizontal = FALSE, barsize = 2, offset.text = 1.75, hjust = .5, offset = 2, fontsize = 5)
test

test2 = ggtree(tree, layout = "circular", branch.length = "none",
              ladderize = TRUE, size = .8) + 
  theme(legend.position = c(0, .82),
        legend.text = element_text(size = 8),
        legend.title = element_text(size = 8)) +
  theme(plot.margin=unit(c(.1,1.5,.1,0),"cm")) +
  geom_strip(1, 2, label = "Test Label", color = "red",
             horizontal = FALSE, barsize = 2, offset.text = 1.75, hjust = .5, offset = 2, fontsize = 5)
test2

The object test2 produces a normal phylogeny with a labeled clade (paraphyletic or otherwise), however the object test produces the following error message:

Error in `geom_text()`:
! Problem while converting geom to grob.
ℹ Error occurred in the 4th layer.
Caused by error in `validDetails.text()`:
! invalid 'rot' value
Run `rlang::last_trace()` to see where the error occurred.
Warning message:
In validDetails.text(x) : NAs introduced by coercion

This can be fixed in post if necessary, but ideally I would like this to be fixed during the initial object production.