Commented Issue: MaskedEditExtender fails when MaskType="DateTime" after focus out [27214]

AjaxControlToolkit 4.1.51116.0
MaskedEditExtender does not allow the time to be set. When the textbox loses focus the hour and minute are set to the two digit month and two digit day used in the date portion.

<asp:TextBox ID="txtDateTime1" runat="server"></asp:TextBox>
<ajaxToolkit:MaskedEditExtender ID="mskDateTime1" runat="server"
Mask="99/99/9999 99:99" MaskType="DateTime" TargetControlID="txtDateTime1"
UserTimeFormat="None" AcceptAMPM="false">
</ajaxToolkit:MaskedEditExtender>
Comments: In 3.0.20820 the bug also happened but only when setting culture override to CultureName property (to "ru-RU", for example). In 4.1.60623 it happens even if CultureName is not set.