Reindent Lines commands don't work

Describe the bug

Commands Reindent Lines, Reindent Selected Lines do nothing.

To Reproduce

1. Create a file temp.R with the following content:

   for(i in 1:2) {
   print(i)
   }
   

2. Use command Reindent Lines; nothing happens
3. Select all lines
4. Use command Reindent Selected Lines; nothing happens

Contrast with JavaScript:

1. Create a file temp.js with the following content:

   for (let index = 0; index < array.length; index++) {
   const element = array[index];   
   }
   

2. Use command Reindent Lines; middle line is indented as expected

EDIT: For Javascript, it also works if only lines 2-3 are selected and the Reindent Selected Lines command is used.

Notes

Not sure if this is a vscode-R bug or a VS Code bug, as there seem to be quite a few VS Code issues related to reindenting, e.g., https://github.com/microsoft/vscode/issues/19847