Hi,
Are you using IOS Safari browser by any chance? Maybe IOS version around 10.x or similar?
Apple yet again did change something in IOS 15.1, where a previously resolved issue was resurfaced, because of the actual fix. So it is sort of “catch 22” situation, where the fix for the problem in one version causes the same issue on the other and vice versa.
Can you please try this custom CSS, it should remove it:
div div.asp_w.ajaxsearchpro input[type="search"] {
appearance: auto !important;
-webkit-appearance: none !important;
}Maybe this one also works with the most recent IOS version, I will try to test and implement in the upcoming release.