Chrome: CSS properties with float values always have locale specific comma

first of all my finding/problem:

I get invalid css property values on setting float values in chrome dev tools.

document.body.style.left = "3.2323%"

The body applies the css code, but converts it to a locale string (I am living in Germany). All other major browsers do not seem to have this problem.

I found old posts on chrome version 6 and 19, where this kind of problem occured.

Anyone has an idea how to fix that or where to report this kind of problem?

Best regards

Michael

edit 1: Screenshot