Major Description
When you write text to be searched in the combobox component of Find, it tries to interpret the code and render it in history. This cause the dropdown button to resize finally hiding the textfield.
For example if you try searching:
<html>\r\n <head></head><body><h1>testing</h1><p>Checking if the find component crash.</p><p>Another paragraph</p><img src="/jira/s/gipaep/76005/1c78b578e5c0e813799ab2baea47b6f7/_/jira-logo-scaled.png" alt="ASF JIRA" data-aui-responsive-header-index="0"></body></html>
It tries to render the page including a "not found" image.
See screen captures attached. Note the HTML code is interpreted in the history and that the arrow button has got bigger letting no space for the find input.
I think it shouldn't try to interpret the code searched.
