Hello Sungbae Kang, Thanks for posting this in our community. I understand how frustrating it can be when a feature you rely on like "Click to do", suddenly stops working after a Windows update. Your time and productivity matter, and we appreciate you reaching out.
To help resolve this, try running the System File Checker. Open Command Prompt as Administrator, then type sfc /scannow and press Enter. This will scan and repair any corrupted system files that might be affecting UI interactions.
If the issue persists, and it starts immediately after a recent update, you might consider rolling back the update. You can do this by going to Settings > Windows Update > Update History > Uninstall Updates, then selecting the most recent Feature Update or Cumulative Update to uninstall.
Kind regards,
John Oli