Shows "Ace" in Query tab of CB Web Console

I am using Version: 4.5.0-2601 Enterprise Edition (build-2601) and it works fine once.
but now I can not input any character in query tab,it only shows “Ace” looks like

and cbq works fine.

notice: after restart CB Server, it still show “Ace”.
I am using Chrome 56.0.2924.87(64)

fixed it by reload Chrome.

That’s interesting. For query input we use the “Ace” code editor, and the word “Ace” is a placeholder that goes away when the editor is loaded.

If you see the problem again, can you check the browser’s error console to see if there are any exceptions there? The problem may have been a browser issue, but I’d like to make sure my code isn’t contributing.

Thank you!

OK,I will report here if the issue happened again. Thanks.