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Request a Feature Report a Bug
Won't Fix
Last Updated: 04 Nov 2025 08:38 by ADMIN
ADMIN
Peter Milchev
Created on: 06 Nov 2017 17:18
Category: FormDecorator
Type: Bug Report
0
Appearance of odd character icons on asp:CheckBox in FireFox when RadFormDecorator is with RenderMode=Classic
Workarounds:
- Use the Lightweight render mode of the FormDecorator;
- Use RadCheckBox instead of asp:CheckBox;
- Use the following styles:
.rfdRadioChecked::before, .rfdRadioUnchecked::before,
.rfdCheckboxChecked::before, .rfdCheckboxUnchecked::before {
    content: none !important;
}
Attached Files:
1 comment
ADMIN
Rumen
Posted on: 04 Nov 2025 08:38

Thank you for reporting this and for the screenshot.

The odd characters appear only when RadFormDecorator is used with RenderMode="Classic". This render mode is a legacy one. Lightweight became the default and recommended render mode in 2015, and all new development, testing and skin updates target Lightweight only. Because of this, we will not be making changes to the Classic rendering of RadFormDecorator, and we are closing this report as Won't Fix.

There are three ways to avoid the issue:

  • Switch RadFormDecorator to RenderMode="Lightweight". This is the recommended option, and it does not show the problem in Firefox.
  • Replace the asp:CheckBox and asp:RadioButton controls with RadCheckBox and RadRadioButton. They do not depend on the FormDecorator and are styled by the skin directly.
  • If you must stay on Classic, hide the unwanted pseudo-element content with this CSS:

    .rfdRadioChecked::before,
.rfdRadioUnchecked::before,
.rfdCheckboxChecked::before,
.rfdCheckboxUnchecked::before {
content: none !important;
}

If you hit a similar problem with RenderMode="Lightweight", please open a new report or a support ticket and we will gladly look into it.

 

Regards,
Rumen
Progress Telerik

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