WebCombo清除Edge

Question

我在WebGrid中有一个WebCombo，当在Chrome和IE上运行时，它似乎可以正常工作，但是当在WebCombo的搜索字段中输入文本时，在Edge中运行大约一秒钟后它就会清除。还有其他人遇到类似的问题吗？

<div id="divGrid" runat="server" class="body row">
        <ISWebGrid:WebGrid ID="wgMain" Width="100%" Height="100%" TabIndex="-1" runat="server" AllowAutoDataCaching="False" UseDefaultStyle="True" RenderingMode="HTML5">
            <RootTable Caption="Table" DataMember="Table">
                <Columns>
                    <ISWebGrid:WebGridColumn DataType="System.Datetime" EditType="CalendarCombo" Name="Column0"
                        Width="100px">
                    </ISWebGrid:WebGridColumn>
                </Columns>
            </RootTable>
            <LayoutSettings PagingMode="VirtualLoad" AlwaysShowHelpButton="False" AllowSorting="No"
                GridLineColor="236, 233, 216" InProgressUIBehavior="ChangeCursorToHourGlass"
                EditOnClick="True" AutoHeight="True" AutoWidth="True" 
                SizeWidthBy="-3" NewRowLostFocusAction="AlwaysUpdate">
                <ClientSideEvents OnAfterAdd="refreshgrid" OnBeforeDelete="confirmdelete" OnEnterEditMode="EnterEditMode"></ClientSideEvents>
                <EditTextboxStyle BorderWidth="0px" Font-Size="10px" Font-Names="Verdana" BorderStyle="None">
                </EditTextboxStyle>
                <ClientSideEvents OnUnhandledError="wgMain_OnUnhandledError" />
                <FrameStyle BackColor="#F1EFE2">
                </FrameStyle>
                <GroupRowInfoStyle BorderWidth="1px" Font-Size="10px" Font-Names="Verdana" BorderColor="White"
                    BorderStyle="Solid" BackColor="#F1EFE2" CustomRules="border-bottom-color: Silver; border-right-color: Silver">
                </GroupRowInfoStyle>
                <AlternatingRowStyle Font-Size="10px" Font-Names="Verdana" BackColor="AntiqueWhite"
                    CustomRules="text-overflow: ellipsis; overflow-x: hidden"></AlternatingRowStyle>
                <FocusCellStyle BorderStyle="Solid" BorderWidth="1px" BorderColor="Navy"></FocusCellStyle>
                <RowStyle Font-Size="10px" Font-Names="Verdana" BackColor="White" Wrap="False" CustomRules="text-overflow: ellipsis; overflow-x: hidden">
                </RowStyle>
                <SelectedRowStyle BackColor="LightSteelBlue"></SelectedRowStyle>
                <HeaderStyle Height="20px" BorderWidth="1px" Font-Size="11px" Font-Names="Verdana"
                    BorderColor="#ACA899" CssClass="WG5-Header" BorderStyle="Solid" ForeColor="Black"
                    BackColor="#ECE9D8" 
                    CustomRules="border-top-color: white; border-left-color: white; height: auto;" 
                    Wrap="False">
                </HeaderStyle>
                <NewRowStyle Font-Size="10px" Font-Names="Verdana" ForeColor="DarkGray" BackColor="White">
                </NewRowStyle>
                <StatusBarStyle BorderWidth="1px" Font-Size="10px" Font-Names="Verdana" BorderColor="#ACA899"
                    BorderStyle="Solid" BackColor="#ECE9D8">
                    <Padding Bottom="2px"></Padding>
                </StatusBarStyle>
            </LayoutSettings>
        </ISWebGrid:WebGrid>
        <ISWebCombo:WebCombo Style="z-index: 115; visibility: hidden; left: 8px; position: relative; top: 0px;"
            ID="wcMain1" runat="server" UseDefaultStyle="True" AllowAutoDataCaching="False"
            DropDownRows="100" Height="18px" Width="200px" DataMember="">
            <LayoutSettings AlwaysShowHelpButton="False" AlwaysShowAllRowsOnDropdown="True" SearchIconMode="Text"
                ResultBoxWindowType="Normal">
            </LayoutSettings>
        </ISWebCombo:WebCombo>
    </div>