I didn't find the answer yet.
I've checked my code in the chrome element inspector and my input tags got an attribute fdprocessedid that I didn't write and I don't understand what is doing and its function. Can someone explain? Thanks!
<input type="number" fdprocessedid="esjjvm" /> (the value chages in each input with random letters)
We had this same issue. It turned out to be the McAfee WebAdvisor Chrome extension that was adding "fdprocessedid" to every button, etc. Try disabling your extensions or launching the page in Incognito mode, and see if it's still there.