Gauge min and label does not update when re-rendered

[jeffkeller87]

When a gauge is re-rendered, the min and label values are not updated with the new values. They are stuck with the values from the first render. max, value, and symbol do update correctly.

example.mov

Example:

library(shiny)
library(flexdashboard)

ui <- fluidPage(
  actionButton(inputId = "button", label = "Re-render"),
  gaugeOutput(outputId = "gauge")
)

server <- function(input, output) {
  
  observeEvent(input$button, ignoreNULL = FALSE, {

    output$gauge <- renderGauge(
      gauge(
        value = sample(1:10, size = 1),
        min = sample(1:5, size = 1),
        max = sample(6:10, size = 1),
        symbol = sample(c("%", "$", "#"), size = 1),
        label = round(runif(1), 5)
      )
    )

  })
  
}

shinyApp(ui = ui, server = server)

sessionInfo()

R version 3.6.3 (2020-02-29)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04.5 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.7.1
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.7.1

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

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

other attached packages:
[1] flexdashboard_0.5.2 shiny_1.5.0        

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.5        rstudioapi_0.13   knitr_1.30        magrittr_2.0.1    xtable_1.8-4     
 [6] R6_2.5.0          rlang_0.4.10      fastmap_1.0.1     tools_3.6.3       packrat_0.5.0    
[11] xfun_0.20         withr_2.3.0       htmltools_0.5.0   yaml_2.2.1        digest_0.6.27    
[16] later_1.1.0.1     htmlwidgets_1.5.3 promises_1.1.1    rsconnect_0.8.16  evaluate_0.14    
[21] mime_0.9          rmarkdown_2.6     compiler_3.6.3    jsonlite_1.7.2    httpuv_1.5.4     
[26] renv_0.12.4