Seems like [this](https://github.com/tidyverse/ggplot2/issues/2991) issue has reoccurred with the change from size to linewidth? ``` r library(ggplot2) ggplot(data.frame(x=1,y=1),aes(x,y)) + theme_bw() + theme(panel.grid = element_line(linewidth = 5)) ``` <!-- --> ``` r ggplot(data.frame(x=1,y=1),aes(x,y)) + coord_sf() + theme_bw() + theme(panel.grid = element_line(linewidth = 5)) ``` <!-- --> <sup>Created on 2023-02-07 with [reprex v2.0.2](https://reprex.tidyverse.org)</sup>