Accessibility Insights is reporting invalid markup on all tabs in the TabList.

When consulting the online aria specifications I see that elements with role="tablist" support aria-level="#" where number is > 0.  (https://www.w3.org/TR/wai-aria-1.2/#tablist) However, elements with role="tab" do not. (https://www.w3.org/TR/wai-aria-1.2/#tab)

If possible, we would like to see the aria-level tag moved to the correct page elements in the next release. (Thanks for correcting the aria-level="0" problem previously.) 

I believe this may be the compliance issue Sunil was reporting previously here: https://feedback.telerik.com/aspnet-ajax/1413112-this-ul-should-only-contain-li-elements-without-an-aria-assigned-role. 

I found issue here in your forum and received an updated fix.

However, the sample fix has the grid name ("RadGrid1") hard-coded in the method "function OnClientHidden(sender, args)". In our code we need to use this for many grids; each with its own name. Please show me how to obtain the grid name generically; preferably from the arguments (sender, args).

Also in the example the checkbox isn't explicitly declared; I assume the code is using some implicit name. However, in our code the name of the checkbox is declared (see below my signature). Please show me how to change the code to use different checkbox names. 

In version R3 2019 (2019.3.917), the following issue is observed with various date pickers: 

Reproduction code and steps:

<telerik:RadDateTimePicker RenderMode="Lightweight" ID="RadDateTimePicker1"  runat="server" >
</telerik:RadDateTimePicker>

1) open date picker, 
2) click on the month/year to open the MonthYearFastNavigation
3) Click Ok or Cancel

Expected: date selected
Actual: JavaScript error: Uncaught TypeError: Cannot read property '_popupButton' of null

Hi,

I have problem with typing into RadMaskedTextBox. I detected that problem is causing MaxLength property. In IE11, Chrome and Firefox, everything is working fine, but in Edge user couldn't type text into input.

<telerik:RadMaskedTextBox ID="txt_PFR1" runat="server" Width="110px" TabIndex="1" 
                                                    MaxLength="5" Mask="PFRaa">
                                                </telerik:RadMaskedTextBox>

Result text should be PFR and two characters, e.g. PFR12 or PFRaX, or... 

I suppose that this property is useless in this control instead of RadTextBox. Could you please remove it, if it doesn't have any other usage purpose ?

Regards

Vasssek

Bug 1:

When RadWindow behavior is set to Maximize/Minimize only, the expected behavior is while minimized, it must only show Maximize button and when maximized, it should show minimize button. 

Currently, it is showing restore button on minimizing and then it restores to a random size.

Bug 2:

Page reloads on maximizing the minimized page.

1. If the page requires authentication, the user has to login again.
2. If the user is on some of the internal pages on a portal, the user is redirected to the login page without referer URL.

The RadWindow width and height are not persisted when the control has been minimized before a PostBack (or navigation to another page).

Steps to reproduce:

1. Run the code below.
2. Click the "Open" Button
3. Minimize RadWindow
5. Click the "PostBack" button
6. Maximize RadWindow

Result: The restored RadWindow has wrong size

        <telerik:RadButton ID="Btn1" runat="server" Text="Open" AutoPostBack="false" OnClientClicked="openFirst"></telerik:RadButton>
        <br />
        <telerik:RadButton runat="server" ID="RadButton1" Text="Postback" AutoPostBack="true" />

        <telerik:RadWindowManager ID="RadWindowManager1" runat="server" EnableViewState="false" PreserveClientState="true">
            <Windows>
                <telerik:RadWindow ID="radWindow_Evidence" runat="server" Title="Evidence" EnableViewState="false" AutoSize="false" DestroyOnClose="true" ReloadOnShow="true"
                    VisibleTitlebar="true" VisibleStatusbar="false" Width="900px" Height="500px"
                    Behaviors="Close,Minimize,Move,Resize,Maximize" Left="320px" Top="0px">
                    <ContentTemplate>
                        Some content
                    </ContentTemplate>
                </telerik:RadWindow>
            </Windows>
        </telerik:RadWindowManager>

        <script>
            function openFirst() {
                radopen(null, "radWindow_Evidence");
            }
        </script>

When loading custom skin trough  RadSkinManager -> Skins -> SkinReference.Path, the logic inside RadSkinManager.FillNonEmbeddedSkinsInfo does not work correctly: in order to load ComboBox.MySkin.css, per say, it requires ComboBox folder to be present inside the custom skin folder.

Cells in Spreadsheet are automatically underlined on second save or when the file is loaded dynamically.

Code to reproduce:
        string filePath = Server.MapPath("Test.xlsx");
        Telerik.Web.Spreadsheet.Workbook wkb = Telerik.Web.Spreadsheet.Workbook.Load(filePath);
        wkb.Save(filePath);

Missing background color of the Grid's headers in IE9 due to the unsupported by the browser linear-gradient. The issue can be reproduced with Skin="Web20".

Workaround:

        div.RadGrid_Web20 .rgHeader, .RadGrid_Web20 th.rgResizeCol, .RadGrid_Web20 .rgHeaderWrapper {
            background-image: linear-gradient(#9db7db,#7b95c6 50%,#698ac0 50%,#92b3de);
            background-color: #92b3de;
        }

Code to reproduce:
                <telerik:RadGrid ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid1_NeedDataSource" AutoGenerateColumns="false" Skin="Web20" EnableEmbeddedSkins="true">
                    <MasterTableView>
                        <Columns>
                            <telerik:GridBoundColumn DataField="description" HeaderText="Description"></telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="value" HeaderText="Value"></telerik:GridBoundColumn>
                        </Columns>
                    </MasterTableView>
                </telerik:RadGrid>

    protected void RadGrid1_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
    {
        (sender as RadGrid).DataSource = GetData();
    }

    private DataTable GetData()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("description");
        dt.Columns.Add("value");
        for (int i = 0; i < 100; i++)
        {
            dt.Rows.Add(
                "description_" + i.ToString(),
                i * 100);
        }

        return dt;
    }

Screencast demonstrating the issue and the fixes: https://www.screencast.com/t/hvCSwumhW

Caused by 

https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/GbVcuwg_QjM/discussion%5B1-25%5D
https://stackoverflow.com/a/45495974
https://stackoverflow.com/a/45746963

Workaround attached

 https://www.screencast.com/t/UgqUZbqenpj5

When the Grid has  <HeaderContextMenu> in the Markup and there is no explicitly set RenderMode of the Grid, the Grid is rendered in Classic. 
It also happens if there is a reference to the ContextMenu in the code behind.

Reproduction steps: 
<script>    
    function f() {
        //code 
        alert($find("RadGrid1")._renderMode);
        Sys.Application.remove_load(f);
    }
    Sys.Application.add_load(f);
</script>
<telerik:RadGrid ID="RadGrid1" runat="server" >  
    <HeaderContextMenu></HeaderContextMenu>         
</telerik:RadGrid>

Solutions: 
1. Remove the HeaderContextMenu tag

2. Set the RenderMode of the Grid explicitly

Hi

Since updating to the latest release of UI for ASP.NET AJAY the RadContextMenu of my RadGrid is misaligned at the right edge of the screen. Even in your sample https://demos.telerik.com/aspnet-ajax/grid/examples/columns-rows/columns/context-menu/defaultcs.aspx when you open the context menu at the right side of the screen the context menu is nor aligned to the left (like it used to be).

Please ses the attached printscreen.

Kind regards
Felix

Using numerictextbox :

- FireFox (rel.67.0.1)  accept non numeric characters.

- IE (rel. 11.461) , correctly, accept only numeric but entering the page in debug mode in Visual Studio, I get the error in attach.

- Edge is ok  

Thanks

Mario

When looking at MetroTouch (and other) skin on FF, Edge and Chrome we see a little discrepance in the stepper bar, see attached.

This will be solved when altering css like so:

.RadWizard .rwzBreadCrumb .rwzLink::before {

    right: -0.5em;}

original value is:

right: -0.6em;