Issue #2992: Revert sidebar width as a workaround for unittest.

scripts/test/Selenium/Agent/MultiAttachmentUpload/CommunicationScreens.t

@@ -126,6 +126,13 @@ $Selenium->RunTest(
             my $Handles = $Selenium->get_window_handles();
             $Selenium->switch_to_window( $Handles->[1] );
 
+            # revert changes of commit 2cf4c40722a91df9ac0090a4048a9c7a9963df89 for AgentTicketPhone masks
+            #   because otherwise the attachment delete button disappears behind the sidebar and is not
+            #   interactive anymore
+            if ( $Action =~ /^AgentTicketPhone/ ) {
+                $Selenium->execute_script("\$('div.SidebarColumn').css('width', '270px');");
+            }
+
             # Wait until page has loaded, if necessary.
             $Selenium->WaitFor( JavaScript => "return typeof(\$) === 'function' && \$('.DnDUpload').length;" );