thisisnic opened a new issue, #35593:
URL: https://github.com/apache/arrow/issues/35593

   ### Describe the bug, including details regarding any error messages, 
version, and platform.
   
   
   
   ``` r
   library(arrow)
   
   # All good with Tables
   mt_table <- arrow_table(mtcars)
   # Yay
   mt_table[["hp"]]
   #> ChunkedArray
   #> <double>
   #> [
   #>   [
   #>     110,
   #>     110,
   #>     93,
   #>     110,
   #>     175,
   #>     105,
   #>     245,
   #>     62,
   #>     95,
   #>     123,
   #>     ...
   #>     150,
   #>     245,
   #>     175,
   #>     66,
   #>     91,
   #>     113,
   #>     264,
   #>     175,
   #>     335,
   #>     109
   #>   ]
   #> ]
   # Hooray
   mt_table$hp
   #> ChunkedArray
   #> <double>
   #> [
   #>   [
   #>     110,
   #>     110,
   #>     93,
   #>     110,
   #>     175,
   #>     105,
   #>     245,
   #>     62,
   #>     95,
   #>     123,
   #>     ...
   #>     150,
   #>     245,
   #>     175,
   #>     66,
   #>     91,
   #>     113,
   #>     264,
   #>     175,
   #>     335,
   #>     109
   #>   ]
   #> ]
   
   # Not so good with Datasets
   tf <- tempfile()
   dir.create(tf)
   write_dataset(mtcars, tf)
   mt_dataset <- open_dataset(tf)
   # Nope
   mt_dataset[["hp"]]
   #> NULL
   # More nope
   mt_dataset$hp
   #> NULL
   ```
   It's also not helped that typing `mt_dataset$` and using tab completion then 
displays the different column names
   
   ### Component(s)
   
   R


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