There is an error trying to indent code using tab with the latest changes: 

treesit--indent-largest-node-at: Wrong type argument: listp, #<treesit-parser for elixir>

  car(#<treesit-parser for elixir>)
  treesit--indent-largest-node-at(3629)
  treesit--indent-1()
  treesit-indent()
  indent--funcall-widened(treesit-indent)
  indent-for-tab-command(nil)
  funcall-interactively(indent-for-tab-command nil)
  call-interactively(indent-for-tab-command nil nil)
  command-execute(indent-for-tab-command)