[Resuelto] is_numeric

Background of the issue:
I am working on a site under development and using WPML/ATE for translation management. I am trying to understand the behavior of WPML's is_numeric function, particularly when dealing with strings that include non-breaking spaces.

Symptoms:
WPML/ATE treats the string ' 01.01.2024' as numeric despite the presence of a non-breaking space, which should typically result in a false outcome from the is_numeric function.

Questions:
Why does WPML/ATE treat the string ' 01.01.2024' as numeric even though it starts with a non-breaking space?
What modifications can be made to a numeric string to ensure WPML/ATE does not treat it as numeric and includes it in the required translation?