Depends.
If you're talking about a hole in the line from the rear valve block to a shock, then no... that would manifest itself all the time... no matter what.
If you're talking about a hole in one of the "main supply lines" (e.g. from the reservoir block to the rear valve block), then theoretically it would only manifest itself when the car opens the valve in the rear valve block. However, if the rear valve block is leaking internally, then it would manifest itself all the time.
If you're talking about a hole in the line from the rear valve block to a shock, then no... that would manifest itself all the time... no matter what.
If you're talking about a hole in one of the "main supply lines" (e.g. from the reservoir block to the rear valve block), then theoretically it would only manifest itself when the car opens the valve in the rear valve block. However, if the rear valve block is leaking internally, then it would manifest itself all the time.