Good idea. The ability to search the list of syntax definition would be nice to have.

Thanks a lot for the bug report! I can reproduce the issue on my iPhone. The syntax definition is actually changed, but that change is not reflected in "Properties" view. I'll fix it in the next update.

Do you mean when editing a file on iPhone? 

Great idea!

In the latest version I added some code that logs information about the App Store receipt because I needed to debug something that only happens in production, not in TestFlight betas.

This code will be removed in the next update because the issue could be resolved. It will then return to "no data collected".

Yes, you can press Cmd-L on an external keyboard.

Without an external keyboard it's currently not possible to jumpt to a specific line, but you can drag the vertical scrollbar to quickly move in the file.

If you have a HTML file that references that JavaScript file and then preview the HTML file, then you should see the console message of the referenced JavaScript file in the web preview.

You can see messages created by console.log() calls in Textastic's web preview screen. 

See https://www.textasticapp.com/v10/manual/viewing_editing_files/web_preview.html#javascript-console

Can you please provide step-by step instructions so I can reproduce the issue? Alternatively, a screen recording video would help. Thanks!