Hijacking back button, shortcuts and key events has to be one of the most annoying thing. This breaks autocomplete/autocorrect, paste and many other use-case like the author encountered.
Related to accessibility concerns of numeric and number input, there is a good blog post from UK Gov that was on the front page a (long?) while ago: https://technology.blog.gov.uk/2020/02/24/why-the-gov-uk-des...