Unable to select drop down while running the script

We are facing issues for selecting drop down on our application.  I am using extented desktop which has 3 displays, 1st one is Built in display(Laptop screen) and 2 monitors. Actually Drop down is getting selected when  test is running on Laptop screen the resolution is 1920 * 1080. But the thing is not working when it is running on other 2 screens (resolution is 1440*900).  Also test is getting failed on the drop down when I run in Jenkins. Below I have provided the Xpath and the Html.

Html:

<div class="dijit dijitInline dijitReset dijitInlineTable dijitLeft dijitTextBox dijitComboBox" role="combobox" dojoattachpoint="stateNode,oneuiBaseNode,_aroundNode,_popupStateNode" aria-labelledby="idx_form_FilteringSelect_8_label" popupactive="true" aria-expanded="false" aria-owns="idx_form_FilteringSelect_8_popup"><div class="dijitReset dijitRight dijitButtonNode dijitArrowButton dijitDownArrowButton dijitArrowButtonContainer" dojoattachpoint="_buttonNode" role="presentation"><input class="dijitReset dijitInputField dijitArrowButtonInner" value="▼ " type="text" tabindex="-1" readonly="readonly" role="presentation"></div><div class="dijitReset dijitInputField dijitInputContainer" dojoattachpoint="inputContainer" dojoattachevent="onmouseenter: _onInputContainerEnter, onmouseleave: _onInputContainerLeave"><input class="dijitReset dijitInputInner" type="text" autocomplete="off" dojoattachpoint="textbox,focusNode" role="textbox" aria-haspopup="true" aria-describedby="idx_form_FilteringSelect_8_hint_inside" tabindex="0" id="idx_form_FilteringSelect_8" value="" aria-invalid="false"><span class="dijitPlaceHolder dijitInputField" id="idx_form_FilteringSelect_8_hint_inside" style="display: none;"></span><input type="hidden" value=""></div></div>

XPath: //label[text()='Shipping Method']/parent::div/following-sibling::div/div/div//input[@value]