UI builder component input of the type number does not block users from typing characters in firefox browserIssue ui builder component: input (type= number) block the user from entering anything else than a number in chrome. However of firefox it is possible to type text. It just shows a red outline when text is entered. ReleaseFirefox versionsResolutionThis is a known issue with Firefox team which is still in open state. Below is the bug reported: https://bugzilla.mozilla.org/show_bug.cgi?id=1398528