output in Graphics Device is wrong in Windows 10, but OK in Linux...??

Hi, First of all I don't know whether this is an ggraph or (under the hood a) ggplot2 issue (or a problem simply caused by me), but since I experienced it while learning ggraph I am posting here.

As said, I am playing with ggraph to manually reproduce some graphs made by some functions in a Bioconductor package. While doing so I experienced something strange: after resetting a ggraph/ggplot2 object by applying the function theme_void, the network as such is still printed (as expected) in the graphics device on my Linux machine, but NOT when I do this on my Windows 10 system (which is rather unexpected...). Note that I am using the same R setup on both machines. Any idea what goes wrong on my Windows system? Thanks! G

Short, reproducible example:

library(ggraph)
library(igraph)
simple <- make_graph('bull')

# define values for 'edge layer'
#
# done like this now since in BioC package arguments
# are defined based on output upstream function.
edge_layer <- geom_edge_link(alpha=0.8, colour='darkgrey')

# generate plot
p <- ggraph(simple, layout = 'graphopt') + edge_layer +
        geom_node_point(size = 5)

print(p)
# looks good!

# now reset theme
p2 <- p + theme_void()
print(p2)

# but this unexpectedly shows only the nodes on Windows??
# ... but (still) looks good on Linux!
# ??? 
#
# Interestingly, when exporting as PDF on Windows, network is as
# expected (thus contains both nodes AND edges).
ggsave(p2, file="reset.network.pdf")

Output p in graphic device windows system:

Output p2 in graphic device windows system: (note that p2 looks fine on Linux machine):

## SessionInfo Windows system
> sessionInfo()
R version 4.0.3 Patched (2020-12-21 r79668)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 17134)

Matrix products: default

Random number generation:
 RNG:     Mersenne-Twister 
 Normal:  Inversion 
 Sample:  Rounding 

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] igraph_1.2.6  ggraph_2.0.4  ggplot2_3.3.2

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.5         magrittr_2.0.1     MASS_7.3-53        tidyselect_1.1.0  
 [5] munsell_0.5.0      viridisLite_0.3.0  colorspace_2.0-0   R6_2.5.0          
 [9] rlang_0.4.9        dplyr_1.0.2        tools_4.0.3        grid_4.0.3        
[13] gtable_0.3.0       ggforce_0.3.2      withr_2.3.0        graphlayouts_0.7.1
[17] ellipsis_0.3.1     digest_0.6.27      tibble_3.0.4       lifecycle_0.2.0   
[21] crayon_1.3.4       tidygraph_1.2.0    gridExtra_2.3      farver_2.0.3      
[25] tweenr_1.0.1       purrr_0.3.4        tidyr_1.1.2        viridis_0.5.1     
[29] vctrs_0.3.6        ggrepel_0.9.0      glue_1.4.2         labeling_0.4.2    
[33] polyclip_1.10-0    compiler_4.0.3     pillar_1.4.7       generics_0.1.0    
[37] scales_1.1.1       pkgconfig_2.0.3   
>

## SessionInfo Linux system
> sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: Fedora 33 (Thirty Three)

Matrix products: default
BLAS/LAPACK: /usr/lib64/libflexiblas.so.3.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] igraph_1.2.6  ggraph_2.0.4  ggplot2_3.3.2

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.5         magrittr_2.0.1     MASS_7.3-53        tidyselect_1.1.0  
 [5] munsell_0.5.0      viridisLite_0.3.0  colorspace_2.0-0   R6_2.5.0          
 [9] rlang_0.4.9        dplyr_1.0.2        tools_4.0.3        grid_4.0.3        
[13] gtable_0.3.0       ggforce_0.3.2      withr_2.3.0        graphlayouts_0.7.1
[17] ellipsis_0.3.1     digest_0.6.27      tibble_3.0.4       lifecycle_0.2.0   
[21] crayon_1.3.4       tidygraph_1.2.0    gridExtra_2.3      farver_2.0.3      
[25] tweenr_1.0.1       purrr_0.3.4        tidyr_1.1.2        viridis_0.5.1     
[29] vctrs_0.3.6        ggrepel_0.9.0      glue_1.4.2         labeling_0.4.2    
[33] polyclip_1.10-0    compiler_4.0.3     pillar_1.4.7       generics_0.1.0    
[37] scales_1.1.1       pkgconfig_2.0.3   
>

thomasp85 / ggraph

output in Graphics Device is wrong in Windows 10, but OK in Linux...?? #273