Never mind the minutes. I’ve often thought that the hours register could jump as well. So why not? The reality for most mechanical chronographs is the jump of the minutes register is semi-instantaneous, not instantaneous. The irreversible jump is engaged like half a second before the minute is up. Lange is the exception to this rule, having developed a true jumping minute.
The semi-instantaneous jump can lead to catastrophic failure in timing, if you stop the chronograph between something like 59.0 and 60.0 seconds. Bad if you’re timing a 25 minute event.