Change in GroupingSeparator: de_CH in JDK 11

ADDITIONAL SYSTEM INFORMATION :
Windows 10 64x

A DESCRIPTION OF THE PROBLEM :
Our company found out that the GroupingSeparator Change from JDK 8 to JDK 11 (11.0.3):
- before the JDK update we get this character: '
- after the JDK update we get another: it looks like that: ’

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
GroupingSeparator like before: '
ACTUAL -
like ’

---------- BEGIN SOURCE ----------
Locale.setDefault(new Locale("de", "CH"));
Locale locale = Locale.getDefault();
DecimalFormatSymbols decimalFormatSymbols = new DecimalFormatSymbols(locale);
System.out.println(decimalFormatSymbols.getGroupingSeparator());
---------- END SOURCE ----------

FREQUENCY : always