In BackOffice (11.4.0), action icons are not appearing for the block grid editor, but do appear for a media picker. Any idea why?

The HTML and CSS seem to be correct.

Media Picker:

<div class="__actions ng-scope">
    <!-- ngIf: vm.supportCopy -->
    <button ng-if="vm.supportCopy" type="button" class="btn-reset __action umb-outline ng-scope" localize="title" ng-click="vm.copyMedia(media); $event.stopPropagation();" title="Copy">
        <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-documents">
            <span class="umb-icon__inner icon-documents">
                <ng-transclude>
                    <!-- ngIf: svgString -->
                    <!-- ngIf: !svgString && icon -->
                    <i ng-if="!svgString &amp;&amp; icon" class="icon-documents"></i>
                    <!-- end ngIf: !svgString && icon -->
                </ng-transclude>
            </span>
        </span>
    </button>
    <!-- end ngIf: vm.supportCopy -->
    <!-- ngIf: vm.allowRemoveMedia -->
    <button ng-if="vm.allowRemoveMedia" type="button" class="btn-reset __action umb-outline ng-scope" localize="title" ng-click="vm.removeMedia(media); $event.stopPropagation();" title="Remove">
        <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-trash">
            <span class="umb-icon__inner icon-trash">
                <ng-transclude>
                    <!-- ngIf: svgString -->
                    <!-- ngIf: !svgString && icon -->
                    <i ng-if="!svgString &amp;&amp; icon" class="icon-trash"></i>
                    <!-- end ngIf: !svgString && icon -->
                </ng-transclude>
            </span>
        </span>
    </button>
    <!-- end ngIf: vm.allowRemoveMedia -->
</div>

Block Grid Editor:

<div class="umb-block-grid__block--actions">
    <!-- ngIf: vm.layoutEntry.$block.showContent === true -->
    <button type="button" class="btn-reset umb-outline action --content ng-scope" localize="title" ng-click="vm.blockEditorApi.editBlock(vm.layoutEntry.$block, false, vm.index, vm.blockForm);" ng-class="{ '--error': vm.blockForm.$error.valServerMatchContent }" ng-if="vm.layoutEntry.$block.showContent === true" title="Edit content">
        <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-edit">
            <span class="umb-icon__inner icon-edit">
                <ng-transclude>
                    <!-- ngIf: svgString -->
                    <!-- ngIf: !svgString && icon -->
                    <i ng-if="!svgString &amp;&amp; icon" class="icon-edit"></i>
                    <!-- end ngIf: !svgString && icon -->
                </ng-transclude>
            </span>
        </span>
    <span class="sr-only">
            <localize key="general_content" class="ng-isolate-scope">Content</localize>
        </span>
        <div class="__error-badge">!</div>
    </button>
    <!-- end ngIf: vm.layoutEntry.$block.showContent === true -->
    <!-- ngIf: vm.layoutEntry.$block.showSettings === true -->
    <button type="button" class="btn-reset umb-outline action --settings ng-scope" localize="title" ng-click="vm.blockEditorApi.openSettingsForBlock(vm.layoutEntry.$block, vm.index, vm.blockForm);" ng-class="{ '--error': vm.blockForm.$error.valServerMatchSettings }" ng-if="vm.layoutEntry.$block.showSettings === true" title="Edit settings">
        <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-settings">
            <span class="umb-icon__inner icon-settings">
                <ng-transclude>
                    <!-- ngIf: svgString -->
                    <!-- ngIf: !svgString && icon -->
                    <i ng-if="!svgString &amp;&amp; icon" class="icon-settings"></i>
                    <!-- end ngIf: !svgString && icon -->
                </ng-transclude>
            </span>
        </span>
        <span class="sr-only">
            <localize key="general_settings" class="ng-isolate-scope">Settings</localize>
        </span> <div class="__error-badge">!</div>
    </button>
    <!-- end ngIf: vm.layoutEntry.$block.showSettings === true -->
    <!-- ngIf: vm.layoutEntry.$block.showCopy === true -->
    <button type="button" class="btn-reset umb-outline action --copy ng-scope" localize="title" ng-click="vm.blockEditorApi.copyBlock(vm.layoutEntry.$block);" ng-if="vm.layoutEntry.$block.showCopy === true" title="Copy"> <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-documents"> <span class="umb-icon__inner icon-documents"> <ng-transclude> <!-- ngIf: svgString --> <!-- ngIf: !svgString && icon --><i ng-if="!svgString &amp;&amp; icon" class="icon-documents"></i><!-- end ngIf: !svgString && icon --> </ng-transclude> </span> </span> <span class="sr-only"> <localize key="general_copy" class="ng-isolate-scope">Copy</localize> </span> </button><!-- end ngIf: vm.layoutEntry.$block.showCopy === true --> <!-- ngIf: !vm.blockEditorApi.readonly --><button ng-if="!vm.blockEditorApi.readonly" type="button" class="btn-reset umb-outline action --delete ng-scope" localize="title" ng-click="vm.blockEditorApi.requestDeleteBlock(vm.layoutEntry.$block);" title="Delete">
        <span aria-hidden="true" class="icon umb-icon ng-isolate-scope" icon="icon-trash">
            <span class="umb-icon__inner icon-trash">
                <ng-transclude>
                    <!-- ngIf: svgString -->
                    <!-- ngIf: !svgString && icon -->
                    <i ng-if="!svgString &amp;&amp; icon" class="icon-trash"></i>
                    <!-- end ngIf: !svgString && icon -->
                </ng-transclude>
            </span>
        </span>
        <span class="sr-only">
            <localize key="general_delete" class="ng-isolate-scope">Delete</localize>
        </span>
    </button>
    <!-- end ngIf: !vm.blockEditorApi.readonly -->
</div>