I am cropping and masking a spatraster using a spatvector. However after doing it,
all the values in the spatraster is converted to 1. This is the same problem here
https://github.com/rspatial/terra/issues/1473

Below are some more details:

My SpatRaster

  class       : SpatRaster 
  dimensions  : 64800, 129600, 1  (nrow, ncol, nlyr)
  resolution  : 0.002777778, 0.002777778  (x, y)
  extent      : -180, 180, -90, 90.00001  (xmin, xmax, ymin, ymax)
  coord. ref. : lon/lat WGS 84 (EPSG:4326) 
  source      : lulc.tif 
  name        : lyr.1 
  min value   :     0 
  max value   :     1 

My SpatVector consisting of 79 countries

  class       : SpatVector 
  geometry    : polygons 
  dimensions  : 79, 12  (geometries, attributes)
  extent      : -180, 180, -55.98, 83.11042  (xmin, xmax, ymin, ymax)
  source      : Australia.shp
  coord. ref. : lon/lat WGS 84 (EPSG:4326) 
  names       :   COUNTRY GID_1 GID_0 NAME_1 VARNAME_1 NL_NAME_1 TYPE_1 ENGTYPE_1  CC_1 HASC_1 ISO_1 agg_n
  type        :     <chr> <int> <chr>  <int>     <chr>     <chr>  <int>     <int> <int>  <int> <int> <int>
  values      : Australia     1   AUS      1        NA        NA      1         1     1      1     1    11

When I crop and mask it, the resulting layer are all converted to 1

  temp <- terra::crop(temp, national_shp, snap = "out", mask = T)
  temp
  
  class       : SpatRaster 
  dimensions  : 50073, 129600, 1  (nrow, ncol, nlyr)
  resolution  : 0.002777778, 0.002777778  (x, y)
  extent      : -180, 180, -55.98055, 83.11112  (xmin, xmax, ymin, ymax)
  coord. ref. : lon/lat WGS 84 (EPSG:4326) 
  source      : spat_73f81cbd5e82_29688.tif 
  varname     : lulc.tif 
  name        : lyr.1 
  min value   :     1 
  max value   :     1 

My session info

  sessionInfo()
  R version 4.3.2 (2023-10-31 ucrt)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows 10 x64 (build 19045)
  
  Matrix products: default
  
  
  locale:
    [1] LC_COLLATE=English_United Kingdom.utf8  LC_CTYPE=English_United Kingdom.utf8    LC_MONETARY=English_United Kingdom.utf8
  [4] LC_NUMERIC=C                            LC_TIME=English_United Kingdom.utf8    
  
  time zone: Europe/London
  tzcode source: internal
  
  attached base packages:
    [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
    [1] zip_2.3.0    terra_1.7-75
  
  loaded via a namespace (and not attached):
    [1] compiler_4.3.2    tools_4.3.2       rstudioapi_0.15.0 Rcpp_1.0.11       geodata_0.5-9     codetools_0.2-19  countrycode_1.5.0