Hi Your report seems don't have any issue for me, My guess is there is another level above the "Name of the institution", So the group split into...

@roycelithgo found it, it is the behaviour setting of the section, I was trying to find the behaviour setting of sub report, so I did not find it. I...

@roycelithgo Hi Royce, where can I find this keep together setting? I have never used this function before.