Hello,
I'm sorry that you're experiencing difficulty getting the Ajax search input to display properly. I see that something on your website is inserting extra HTML <br> tags into TubePress's output. This in turn is breaking both the display and functionality of the search input.
I can also guarantee that this is not a bug with TubePress, as this exact code is used in thousands of production sites. It's almost certainly caused by interference from either your WordPress theme or another WordPress plugin. It's very easy for WordPress plugins, for instance, to modify a page's HTML.
So what's the solution? Here's what I recommend:
- Temporarily switch to one of the stock WordPress themes (i.e. twentytwelve). Does the problem go away?
- If not, disable your other WordPress plugins, one-by-one, until the problem goes away.
This is a tedious process, I know, but it's actually quite effective in pinpointing the problem. Please give that a try and report back here with your results. We'll get it figured out!
Thanks.