Mine as well. I thought it's just me. 

Hi Graham, 

Welcome to Box Community and glad to assist!

Are you having trouble searching via your Box for desktop application or through the Box website? If it's the latter, we've listed down the recommended troubleshooting steps that could fix your search issue. 

• Updating your browser to the latest version


• Clearing your browser's cache


• Using Box with an alternate browser, computer, or network. 


• Temporarily disabling any internet security/firewall programs to test whether they conflict with Box (Note: you may need clearance or assistance from your organization’s IT department/helpdesk to do this)


• Temporarily disabling any plugins/extensions in your browser


• Removing unwanted extensions, plug-ins, ads, pop-ups & malware:
  
  • 
    Chrome, Edge, Firefox, Safari
    
  
  


• Restart your machine. 

Hope it helps!