Bug? Undo/Redo

B4J has a small error with the use of undo/redo. For example, after running this code (not Copy/Paste):

Dim s As String
Dim b As Boolean = (s = "a" Or s = "b")

Undo no longer functions (After Enter).

It is fixed for the next update. V6.01 with this fix will be released after B4A v7.8 is released.