geom_graph: Error in compute_layout(..., self = self) : object 'node_map' not found

[RiboRings]

Hi!

I am trying to group facets by edge variables both row-wise and column-wise. However, geom_graph seems to fail even when setting col_type = "edge". Of course I could use facet_edges instead, but ideally I would like to reproduce the layout of facet_wrap with the lateral panel titles, and not that of facet_grid. Below is an example of the error:

library(ggraph)
library(tidygraph)

# Create variable that should be represented by the column
highschool$group <- rbinom(nrow(highschool), 1, 0.5)

gr <- as_tbl_graph(highschool)

# Failing example with facet_graph
ggraph(gr) +
  geom_edge_link() +
  geom_node_point() +
  facet_graph(year ~ group, col_type = "edge")

#> Error in compute_layout(..., self = self) : object 'node_map' not found

# Working example with facet_edges
ggraph(gr) +
  geom_edge_link() +
  geom_node_point() +
  facet_edges(year ~ group)

Thanks for the nice package!