Possible bug: styleRow() appears to do nothing when viewed in browser

[BajczA475]

Problem: When using formatStyle() with styleRow() to conditionally style rows, I am getting inconsistent behavior. When viewing in the RStudio viewer, the code works as intended; when viewed in the browser with the app running, it doesn't (as if the code is doing nothing)

Reproducible example: 

### LOAD PACKAGES
library(shiny)
library(dplyr)
library(DT)
library(gapminder)

### LOAD DATA SETS 
gap = gapminder

ui = fluidPage(
  
  dataTableOutput("basic_table")
  
)

server = function(input, output, session) {
  
  output$basic_table = renderDT({
###
  gap %>% 
    datatable() %>% 
    formatStyle(columns = names(gap),
                backgroundColor = styleRow(
                  which(gap$lifeExp > 70), "lightpink"
                ))
###
  })
  
}

shinyApp(ui, server)

If I run the code between the ###s at the Console and examine in my Viewer, I can confirm the code works correctly, but when launching the app, I don't get any conditional formatting. My browser is Edge (up to date). I have cleared my cache, used ctrl+F5, and examined the devtools--no issues/changes. Edit: I'll also note that I have no custom CSS being applied to this code; only whatever might be coming along by default. 

I'm running latest version of RStudio but R 4.3.3 (4.4.0 has been buggy for me). Session info:

R version 4.3.3 (2024-02-29 ucrt)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 11 x64 (build 22631), RStudio 2024.4.2.764

Locale:
  LC_COLLATE=English_United States.utf8  LC_CTYPE=English_United States.utf8   
  LC_MONETARY=English_United States.utf8 LC_NUMERIC=C                          
  LC_TIME=English_United States.utf8    

Package version:
  base64enc_0.1.3   bslib_0.7.0       cachem_1.0.8      cli_3.6.2        
  crosstalk_1.2.1   digest_0.6.35     DT_0.33           evaluate_0.23    
  fastmap_1.1.1     fontawesome_0.5.2 fs_1.6.4          glue_1.7.0       
  graphics_4.3.3    grDevices_4.3.3   highr_0.10        htmltools_0.5.8.1
  htmlwidgets_1.6.4 httpuv_1.6.15     jquerylib_0.1.4   jsonlite_1.8.8   
  knitr_1.46        later_1.3.2       lazyeval_0.2.2    lifecycle_1.0.4  
  magrittr_2.0.3    memoise_2.0.1     methods_4.3.3     mime_0.12        
  promises_1.3.0    R6_2.5.1          rappdirs_0.3.3    Rcpp_1.0.12      
  rlang_1.1.3       rmarkdown_2.26    sass_0.4.9        stats_4.3.3      
  tinytex_0.50      tools_4.3.3       utils_4.3.3       xfun_0.43        
  yaml_2.3.8       




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