Undo Begin and End block: no redo possible

[_Stevie_]

I noticed something strange with Undo Begin and EndBlock and wonder why no one else stumbled across this.

There are several issues with these functions:

- the undo name of the script is displayed in the undo list (next to the help menu), but when opening the undo history, there is no entry.

- executing redo for an undone script does not work at all


Is this a bug or expected behavior?