Problem calling error handler from BEGIN...END SEQUENCE

[cpyrgas]

https://www.xsharp.eu/forum/topic?p=32646#p32646

Following code prints in X#:

before BEGIN SEQUENCE .F. 
in BEGIN SEQUENCE .T. 
in RECOVER .F. 
after END SEQUENCE .F. 

so the ErrorHandler() function is not called at all, as it does in VO:

before BEGIN SEQUENCE .F. 
in BEGIN SEQUENCE .T. 
in ErrorHandler .T. // why is this line missing in X#?
in RECOVER .F. 
after END SEQUENCE .F. 

FUNCTION Start()  AS INT
	LOCAL oCB AS CODEBLOCK
	LOCAL err AS USUAL

	oCB := ErrorBlock( {|err| ErrorHandler(err) } )
	? "before BEGIN SEQUENCE", CanBreak()
	BEGIN SEQUENCE
		? "in BEGIN SEQUENCE", CanBreak()
		Error{}:Throw()
	RECOVER USING err      
		? "in RECOVER", CanBreak()
	END SEQUENCE
	ErrorBlock( oCB )
	?  "after END SEQUENCE", CanBreak() 
RETURN 0
	
FUNCTION ErrorHandler(err) AS USUAL
	?  "in ErrorHandler", CanBreak() 
	_Break(err)
	?  "in ErrorHandler after _break", CanBreak() 
RETURN NIL

[RobertvanderHulst]

Some comments:
This should have worked as expected when the /vo17 compiler option (VO compatible BEGIN SEQUENCE .. END SEQUENCE) was enabled, but I see now that the code that gets generated is not correctly doing what it is supposed to do.