Hi Alex,
Thanks for your prompt response.
Ux team has come up with analysis that content page consists of header, body
and footer as usual.
In the header there is a Nav Bar with dropdown based on bootstrap 3.3.7.
If page's body contains orbeon form then the bootstrap based dropdown stops
working. On other pages where body does not contain orbeon form, Nav Bar
with dropdown in the header works.
According to Ux team their probable guess is that orbeon form is preventing
dropdown click event.
Is this some sort of issue already known?
Regards
Rohan