When a UnicodeString executes the method printString. It no longer consistently returns a String with the utf8 bytes of the UnicodeString - but either a String with code points in the active code page, or a UnicodeString if no such reduction is possible.

On Windows, in order to deterministically display Strings/UnicodeStrings in Editors / Inspectors correctly, UnicodeString >> #printElementsOn:recursionSet: had to change. It now puts itself, rather than its utf8 contents to the stream..

This means the result/contents change when a UnicodeString executes the method printString.

If previously, printString was used to obtain the utf8 bytes of a UnicodeString, it should be replaced by the expression aString utf8 contents.

If previously, printString was used to ensure receiver is an EsString, #asSBString is the best replacement Please note, this will return nil if the string cannot be represented in the active code page..