"Replace All" do not work properly in Groovy step

Hi!

at least in Groovy test step, Replace All feature do not take into account "Case sensitive" check-box
How to reproduce :

1 - create new Groovy step
2 - put two strings there, e.g. "Abc" and "abc"
3 - replace all "abc" with "xyz" and with "case sensitive" checked
-----> both strings are replaced, not just one. Single replacing works correctly

This is a bit dangerous or at least very annoying

I have 4.5.1. Pro version