Different behaviour of the same customized application on different user PC

We have a customized form application with dynamic enabling / disable of form control, like below.

IF Variable = 'Y'

    Enable Control (HC Split)

    Enable Control (HC Split Cancel)

    Enable Control (HC Split Copy)

Else

   Disable Control (HC Split)

   Disable Control (HC Split Cancel)

   Disable Control (HC (Split Copy)

End If

We find control 'HC Split', 'HC Split Cancel', 'HC Split Copy) can be display on one user PC but cannot be display on another user PC.

We are on JDE9.2 tools release 9.2.3.3 and the form application is running on Web. The same behavior different observed on IE and also on Chrome.