RStudio IDE not enter debug mode

RStudio IDE
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1

I'm encountering an unusual behavior when using the debug function in RStudio. I've defined a function and used debugSource to source the script, but the debugging experience is not as expected.

Here's what I've done:

  1. Defined the function:
test <- function(x) {
    browser()
    y <- x^2
    return(y)
}

  1. Sourced the script:debugSource("~/1.R")

  2. Called the function: test(1)

Expected behavior:

  • I expected to enter a graphical debugging mode within the RStudio IDE.
  • I should be able to use buttons like "Step" and "Continue" to control the debugging process.
  • The "Environment" pane should display the values of variables in the current environment.
  • I've attached an image showing the expected behavior, which I've observed on a different server:
    image
    image1412×886 83.7 KB

Actual behavior:

  • I'm entering a command-line debugging mode (Browse[1]>).
  • The debugging menu options like "Execute next line" are grayed out (see attached image).
  • The graphical debugging interface is not appearing.

image
image1349×777 57.4 KB

What I've tried:

  • Checked RStudio's global options for debugging settings
  • Restarted RStudio
  • Ensured the function is defined correctly and called appropriately
  • Tried setting breakpoints directly

System Information:

  • RStudio Version: RStudio Server 2023.09.1 Build 494
  • OS Version: Ubuntu 22.04.4
  • R Version: 4.4.0