TWebTableControl search function not working

I'm looking at the Demo project TMSWeb_TableControlPaging. I run it after changing the WebTableControl1 Header Search Property from False to True. I type in a search value in the box and click the magnifying glass icon, and I get the following error in the browser console:

index.html:1 Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist.
WEBLib.Utils.pas:1980 Uncaught TypeError: Cannot read properties of undefined (reading 'length')
at $impl.Matches (WEBLib.Utils.pas:1980:48)
at Object.MatchStr (WEBLib.Utils.pas:2005:15)
at Object.FindFrom (WEBLib.Grids.pas:7117:10)
at Object.FindCell (WEBLib.Grids.pas:7096:13)
at Object.HandleSearchClick (WEBLib.Grids.pas:10737:11)
at HTMLImageElement.cb (rtl.js:236:1)
DevTools failed to load source map: Could not load content for chrome-extension://cfhdojbkjhnklbpkdaibdccddilifddb/ System error: net::ERR_FILE_NOT_FOUND

Is this a bug or do I need to make some other change to get the search function to work?

We've seen an issue when the string is not found in a paged table control.
We're investigating to have this fixed asap.