Issues with Drop Down when it fills the screen.

Issues with Drop Down when it fills the screen.

Hello,
Is anyone having a problem with the following symptom:
I have an HTML Select that fills the browser screen.
I select one option the first time, then I change my mind and select another option.
after that, when I have problems navigating away from the page (In a standard browser, the loading page keeps loading and on my iPhone, it goes somewhere but not the page that want it to go.

I attached a zip of 4 files ( 2 normal page, 1 working ddl and 1 ddl that is having the issues)
to reproduce the problem, just start from any page except the problem page,
then navigate to the problem page, select an option, then select another option
and lastly, navigate away.