Bug in FormatFloat when running in 64-bit - Drops "e" at end of format string

Delphi XE7 summer and winter hotfixes applied. Format float will drop a trailing "e" in the format string when running in 64-bit mode. Create a new project, drop a button on the form and in the OnClick event of the button insert the following code:

  ShowMessage(FormatFloat(',0.00 Balance', 12345.1));

Running in 32-bit works as expected but when run in 64-bit the last "e" in the word Balance will be lost. (see below example)