RadTextBox Multiline Issue with IE8

[Juan Angel]

We have this scenario: complex pages (with 3 ContentPlaceHolders):

+ ContentPlaceHolder1: 

- Big menu (over 300 items in several RadTreeViews),

+ ContentPlaceHolder2: 

- Over 30 simple controls (RadTextBoxes, RadComboBox, RadDatePickers, etc.

- A RadGrid with edit in complex PopupForm (over 15 simple controls and one RadGrid).

+ ContentPlaceHolder3:

- ButtonBar with 10 ImageButtons

Well, with :

1. new RadControls 2009.3.1208.35 (older version it's OK)
2. only in IE8 (IE7, Firefox, Chrome it's OK)
3. RadTextBox Multiline and ReadOnly="false" (if you set to SingleLine or ReadOnly="true" it's OK).

In this scenario, when you focus at RadTextBox Multiline the processor up to 50% and 1, 2, 3 or 4 second later textbox catch the focus. Therefore the page usability it's very poor.

This issue it's very rare. If you:

- use older version (for example 2009.3.1103)

- set my big menu to visible="false" or,

- use IE7, Firefox or Chrome or,

- set TextMode="SingleLine" or

- set ReadOnly="true"

- try with any other control: RadComboBox, RadDatePicker, RadTextBox SingleLine, ...

this behaviour disappears.

Thanks a lot.

[Pavel]

Hello Juan,

We have fixed a similar issue since the release of Q3 Service Pack 1 of the controls. Please try our latest internal build and let us know if the problem persists.

Sincerely yours,
Pavel
the Telerik team

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[Per]

Any solution to this problem? I have the same issue using v.2010.2.826.40!

My textbox is placed within a listview (ASP) and when using a EmptyMessage this occurs, removing EmptyMessage everything works ok.

[Pavel]

Hi Per,

I cannot reproduce such a problem with our latest release. Could you paste some of your relevant code/markup so I can get a better idea of the exact scenario? This will help us investigate the issue further.

Kind regards,
Pavel
the Telerik team