I am also not able to reproduce this behavior.
Nothing has changed here… it is the way it has always been. You may enter time in most formats… e.g. 5 or 5s for 5 seconds, 5m or 300 for 5 min. That said, SGPro only stores exposure times in seconds… This means that if you set exposure time as 10m, the next time you open the sequence, it will read 600.