If you use moveCursor in a file that has tabs, recent version of vscode jump to somewhere unexpectingly. So you ask to jump to line 4 column 20, but because there are 2 tabs at the front, it actuall jumps to line 4 column 25. The loop at the end of moveCursor therefor never terminates.

Steps to Reproduce

1. have a file that contains tabs
2. open the file using openEditor
3. new TextEditor().moveCursor(<line>, <column after tab>);
4. error: TimeoutError: Unable to set cursor at position 15:15
5. if I replace the tabs in the file with 4 spaces, it works again

Expected behavior

• jump to location and continue
• note, this seems to be a new bug, older version of vs code worked fine with these tests.

Environment information

• OS:
  • Windows
  • Linux
  • macOS
• VSCode version: 1.82.0
• ExTester version: 5.9.2
• Node (npm) version: 8.15