Hello Huzefa,

If you want to have a search also based on another column, you should be able to do it by using AdditionalSearchFiled properties. All you need to do is select also that table in your datasource query.
You don't need to add a additional column and hide it.

For the weird AutoComplete behaviour, would you mind to provide more details such as video recording or a simple sample that replicates the issue?

Unfortunately, you could not filter on each column header in WebGrid. We don't have any feature of that.
It also could not be achieve DropDown template.

Regards,
Handy 

Hello Jean,

Ok, Thank you for your sample. I can replicate the issue in here. This issue can be replicated not only using F11 but all the time when resize the browser (maximize or minimize). I will forward this issue to our developer teams and will let you know the result asap.

Regards,
Handy

Hello Nicolas,

I am able to replicate this issue. I will deliver this issue to our developer team.

Regards,
Handy

Hello,

I've been informed by our developer teams regarding this issue. However, this is not a bug. This issue is raised by browser limitation. Since this is a browser limitation, we could not do much about this issue.

Regards,
Handy

Hello,

We are very sory for the late response. Unfortunately, this is not a bug. When using Iframe scenario, you will need to change menu window type of contextmenu as normal.
Normally in IE, it supports 2 types such as popup and normal. In other browsers, popup is not supported.
To change the type, you will need to handle it OnContextMenu clientside events in WebDesktopManager.

Here is the snippet code:

function WebDesktopManager1_OnContextMenu(controlId, objectType, contextObject, menu)
{
            var WebDesktopManager1 = ISGetObject(controlId);
            menu.MenuWindowType = "Normal";
            return true;
}

Regards,
Handy