RH850F1KM OSTM Timer: Inconsistent Interrupt Timing After Restart

Hi Renesas Team,

                            I am working with RH850F1KMS1, IDE-CS+(8.13). I am using the OSTM timer to generate an interrupt at regular intervals. I have set the period to 1 second and can receive the interrupt as expected (every second). But I have a requirement where I have to start/stop whenever required. The moment i stop & start the timer, the timing gets messed u, I get the interrupt immediately within a few microseconds. When i checked the datasheet, stopping & starting the timer will reset the counter & there won't be any issue in timing, but that isn't what i am observing. I would appreciate some help. I have attached the images which i find it relevant if you need anything more, let me know.