Template code snippet:
<com:TTextBox ID="tb" />
<com:TRequiredFieldValidator Display="Dynamic"
ControlToValidate="tb" ErrorMessage="tb is empty" />
<!-- works as expected: -->
<com:TLinkButton CausesValidation="false"
OnCommand="Page.onClickLink" Text="Regular Link" />
<!-- causes validation: -->
<com:TActiveLinkButton CausesValidation="false"
OnCommand="Page.onClickLink" Text="Active Link" />