Uncaught TypeError: selection.getBufferRange is not a function

[Enter steps to reproduce:]

1. Select Elm code.
2. Press cmd-alt-/ to block-comment.

Atom: 1.40.1 x64
Electron: 3.1.10
OS: Mac OS X 10.14.6
Thrown From: block-comment-plus package 0.5.1

Stack Trace

Uncaught TypeError: selection.getBufferRange is not a function

At /Applications/Atom.app/Contents/Resources/app/static/<embedded>:11

TypeError: selection.getBufferRange is not a function
    at /packages/block-comment-plus/lib/block-comment-plus.js:42:40
    at TextBuffer.transact (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:492111)
    at HTMLElement.toggle (/packages/block-comment-plus/lib/block-comment-plus.js:38:10)
    at CommandRegistry.handleCommandEvent (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:349123)
    at KeymapManager.dispatchCommandEvent (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:1249835)
    at KeymapManager.handleKeyboardEvent (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:1245969)
    at WindowEventHandler.handleDocumentKeyEvent (/Applications/Atom.app/Contents/Resources/app/static/<embedded>:11:284329)

Commands

     -1:43.8.0 pane:show-next-item (input.hidden-input)
     -1:21.1.0 editor:toggle-line-comments (input.hidden-input)
     -1:15.5.0 editor:select-to-end-of-line (input.hidden-input)
     -1:14.7.0 block-comment-plus:toggle (input.hidden-input)
     -0:59 settings-view:open (a.)
     -0:06.4.0 block-comment-plus:toggle (input.hidden-input)

Non-Core Packages

atom-python-run 0.9.7 
atom-quokka 1.0.159 
atom-solidity-linter 0.0.11 
atom-transpose 0.3.5 
autocomplete-solidity 0.3.4 
autocomplete-xml 0.8.1 
block-comment-plus 0.5.1 
elm-format 3.2.0 
elm-navigator 2.0.0 
es6-javascript 1.0.0 
language-elm 1.5.0 
language-haskell 1.18.0 
language-idris 0.4.5 
language-purescript 0.8.3 
linter 2.3.0 
linter-clojure 1.1.2 
linter-solium 0.0.5 
linter-ui-default 1.7.1 
linter-xmllint 1.3.0 
prettier-atom 0.53.0 
pretty-json 2.0.0 
python-yapf 0.14.0 
todo-show 2.1.0