Troubleshooting Outlook’s display of task list or to-do items can be a challenging task. Here are some suggested steps for resolving the issue:

1. Check Windows system settings: Check the ClearType Text and Display settings to ensure they were adjusted to the best settings.
2. Check Outlook settings: Check the settings in Outlook to ensure they have not been adjusted to a less than optimal configuration.
3. Revert back to default Outlook settings: If the problem persists, reset Outlook to factory settings to return it to its original state.
4. Update Outlook: If any Outlook updates or patches are available, make sure to install them to be sure Outlook is running the latest version.
5. Check your network connection: Make sure your connection to the Internet is stable and secure.
6. Verify Outlook is not running in compatibility mode: If possible, run Outlook in native mode and confirm that the issue has been resolved.