Program line issue

When using the AXIS interface, i have an issue with the box that shows the current program line on which the machine is situated. It uses an orange like background to show the current position but when it goes further on the program i have to scroll down to see the position. Sometimes it scrolls down automaticly to the current position and follows it, but most times it doesnt not. Could somebody tell me how to solve this? Thank you in advance

I havent changed a single thing in the .ini file. When i start the machine everything is normal it scrolls down automatically to the current line of the program. But in some time, it shows the line on which the program is, but the dialog box stops scrolling down and it stays on the first line of the program and if you want to see the current line of the program you have to scroll down manually.