From the github issue related to this problem - $sce
does not support IE7 in standards mode.
The minimum bar for $sce is IE8 in standards mode. IE7 standards mode is not supported. If you must support IE7, you should disable $sce completely.
To disable $sce
:
angular.module('ie7support', []).config(function($sceProvider) {
// Completely disable SCE to support IE7.
$sceProvider.enabled(false);
});