EDIT: using SP2010, with Enterprise and Publishing features enabled at the WebApp and site where intend to use the feature.
We have a 3rd party solution (Lookup with Picker [ilovesharpoint.fields.lookupfieldwitrhpciker.wsp]) deployed to a single web application in our farm, and it works as intended when I am visiting the fully qualifed URL.
Unfortunately, it errors when using a short URL.
The alternate access mapping is set for both FQDN and short in CA, like this: htp://mycompany.sharepoint.com (default zone) & htp://mycompany (intranet zone).
Unfortunately, my UAT environments dont have alternate mapping, and I want to avoid unnecessary changes if/where posssible.
Sp logs show:
07/28/2017 13:06:10.55 w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Logging Correlation Data xmnv Medium Name=Request (GET:/test/_layouts/FldNewEx.aspx?List=%7BFC9C90ED%2DB4C2%2D469F%2D888D%2D54532C2BB11E%7D&FieldTypeParam=LookupFieldWithPicker&DisplayNameParam=&DescriptionParam=&VldFormulaParam=&VldMessageParam=) eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.55 w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Logging Correlation Data xmnv Medium Site=/ eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.58 w3wp.exe (0x1C98) 0x162EC Document Management Server Document Management 52od Medium MetadataNavigationContext Page_InitComplete: No XsltListViewWebPart was found on this page[/_layouts/FldNewEx.aspx?List=%7BFC9C90ED%2DB4C2%2D469F%2D888D%2D54532C2BB11E%7D&FieldTypeParam=LookupFieldWithPicker&DisplayNameParam=&DescriptionParam=&VldFormulaParam=&VldMessageParam=]. Hiding key filters and downgrading tree functionality to legacy ListViewWebPart(v3) level for this list. eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.58 w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Runtime tkau Unexpected System.Resources.MissingManifestResourceException: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Resources.iLoveSharePoint.Fields.LookupFieldWithPicker.resources" was correctly embedded or linked into assembly "App_GlobalResources.4geskbgx" at compile time, or that all the satellite assemblies required are loadable and fully signed. at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents) at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents) at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents) at System.Re... eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.58* w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Runtime tkau Unexpected ...sources.ResourceManager.GetObject(String name, CultureInfo culture, Boolean wrapUnmanagedMemStream) at System.Web.Compilation.BaseResXResourceProvider.GetObject(String resourceKey, CultureInfo culture) at System.Web.Compilation.ResourceExpressionBuilder.GetResourceObject(IResourceProvider resourceProvider, String resourceKey, CultureInfo culture, Type objType, String propName) at System.Web.HttpContext.GetGlobalResourceObject(String classKey, String resourceKey, CultureInfo culture) at Microsoft.SharePoint.Search.SPSatelliteResourceExpressionBuilder.GetResource(String classKey, String resourceKey) at ASP._controltemplates_ilovesharepoint_lookupfieldwithpicker_lookupfieldwithpickereditor_ascx.__BuildControlinputFormControlWeb() at ASP._controltemplates_ilovesharepoin... eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.58* w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Runtime tkau Unexpected ...t_lookupfieldwithpicker_lookupfieldwithpickereditor_ascx.__BuildControlpanelEditor() at ASP._controltemplates_ilovesharepoint_lookupfieldwithpicker_lookupfieldwithpickereditor_ascx.__BuildControlTree(_controltemplates_ilovesharepoint_lookupfieldwithpicker_lookupfieldwithpickereditor_ascx __ctrl) at System.Web.UI.TemplateControl.LoadControl(IWebObjectFactory objectFactory, VirtualPath virtualPath, Type t, Object[] parameters) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at Microsoft.SharePoint.ApplicationPages.FieldCustomizationPage.CreateChildControls() at Microsoft.SharePoint.ApplicationPages.FieldNewPage.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at Microsoft.SharePoint.ApplicationPages.FieldCustomizationPage.... eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.58* w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Runtime tkau Unexpected ...OnLoad(EventArgs e) at Microsoft.SharePoint.ApplicationPages.FieldNewPage.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) eaf44ba8-8ead-4175-b79c-4d6603914701
07/28/2017 13:06:10.60 w3wp.exe (0x1C98) 0x162EC SharePoint Foundation Monitoring b4ly Medium Leaving Monitored Scope (Request (GET:/test/_layouts/FldNewEx.aspx?List=%7BFC9C90ED%2DB4C2%2D469F%2D888D%2D54532C2BB11E%7D&FieldTypeParam=LookupFieldWithPicker&DisplayNameParam=&DescriptionParam=&VldFormulaParam=&VldMessageParam=)). Execution Time=46.7704 eaf44ba8-8ead-4175-b79c-4d6603914701