diff --git a/bubble-server/src/main/java/bubble/rule/AbstractAppRuleDriver.java b/bubble-server/src/main/java/bubble/rule/AbstractAppRuleDriver.java
index db668d7a..25bf087b 100644
--- a/bubble-server/src/main/java/bubble/rule/AbstractAppRuleDriver.java
+++ b/bubble-server/src/main/java/bubble/rule/AbstractAppRuleDriver.java
@@ -27,6 +27,7 @@ import org.cobbzilla.util.handlebars.HandlebarsUtil;
 import org.cobbzilla.util.io.FileUtil;
 import org.cobbzilla.util.io.regex.RegexFilterReader;
 import org.cobbzilla.util.io.regex.RegexReplacementFilter;
+import org.cobbzilla.util.string.LocaleUtil;
 import org.cobbzilla.util.system.Bytes;
 import org.cobbzilla.wizard.cache.redis.RedisService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -40,7 +41,8 @@ import java.util.Map;
 import static bubble.ApiConstants.HOME_DIR;
 import static bubble.rule.RequestModifierRule.ICON_JS_TEMPLATE;
 import static bubble.rule.RequestModifierRule.ICON_JS_TEMPLATE_NAME;
-import static org.cobbzilla.util.daemon.ZillaRuntime.*;
+import static org.cobbzilla.util.daemon.ZillaRuntime.die;
+import static org.cobbzilla.util.daemon.ZillaRuntime.empty;
 import static org.cobbzilla.util.io.FileUtil.abs;
 import static org.cobbzilla.util.io.FileUtil.basename;
 import static org.cobbzilla.util.io.regex.RegexReplacementFilter.DEFAULT_PREFIX_REPLACEMENT_WITH_MATCH;
@@ -157,7 +159,7 @@ public abstract class AbstractAppRuleDriver implements AppRuleDriver {
         final RequestModifierConfig modConfig = requestModConfig();
         final String replacement = DEFAULT_PREFIX_REPLACEMENT_WITH_MATCH
                 + scriptOpen(filterRequest, modConfig.getScriptOpenNonce(), modConfig.getScriptOpenNoNonce())
-                + getBubbleJs(filterRequest.getId(), filterCtx, bubbleJsTemplate, defaultSiteTemplate, siteJsInsertionVar, showIcon)
+                + getBubbleJs(filterRequest, filterCtx, bubbleJsTemplate, defaultSiteTemplate, siteJsInsertionVar, showIcon)
                 + getScriptClose();
 
         final RegexReplacementFilter filter = new RegexReplacementFilter(getInsertionRegex(), replacement);
@@ -179,13 +181,13 @@ public abstract class AbstractAppRuleDriver implements AppRuleDriver {
         return new ReaderInputStream(reader, UTF8cs);
     }
 
-    protected String getBubbleJs(String requestId,
+    protected String getBubbleJs(FilterHttpRequest filterRequest,
                                  Map<String, Object> filterCtx,
                                  String bubbleJsTemplate,
                                  String defaultSiteTemplate,
                                  String siteJsInsertionVar,
                                  boolean showIcon) {
-        final Map<String, Object> ctx = getBubbleJsContext(requestId, filterCtx);
+        final Map<String, Object> ctx = getBubbleJsContext(filterRequest, filterCtx);
 
         if (!empty(siteJsInsertionVar) && !empty(defaultSiteTemplate)) {
             final String siteJs = HandlebarsUtil.apply(getHandlebars(), getSiteJsTemplate(defaultSiteTemplate), ctx);
@@ -208,6 +210,8 @@ public abstract class AbstractAppRuleDriver implements AppRuleDriver {
     public static final String CTX_BUBBLE_APP_NAME = "BUBBLE_APP_NAME";
     public static final String CTX_ICON_JS = "ICON_JS";
     public static final String CTX_APP_CONTROLS_Z_INDEX = "APP_CONTROLS_Z_INDEX";
+    public static final String CTX_ACCOUNT_LOCALE = "ACCOUNT_LOCALE";
+    public static final String CTX_ACCOUNT_LANG = "ACCOUNT_LANG";
 
     public static final int PAGE_ONREADY_INTERVAL = 50;
     public static final int APP_CONTROLS_Z_INDEX = 2147483640;
@@ -215,7 +219,8 @@ public abstract class AbstractAppRuleDriver implements AppRuleDriver {
     private String getPagePrefix(String requestId) { return "__bubble_page_"+sha256_hex(requestId); }
     private String getJsPrefix(String requestId) { return "__bubble_js_"+sha256_hex(requestId+"_"+getClass().getName()); }
 
-    protected Map<String, Object> getBubbleJsContext(String requestId, Map<String, Object> filterCtx) {
+    protected Map<String, Object> getBubbleJsContext(FilterHttpRequest filterRequest, Map<String, Object> filterCtx) {
+        final String requestId = filterRequest.getId();
         final Map<String, Object> ctx = new HashMap<>();
         ctx.put(CTX_PAGE_PREFIX, getPagePrefix(requestId));
         ctx.put(CTX_JS_PREFIX, getJsPrefix(requestId));
@@ -226,6 +231,11 @@ public abstract class AbstractAppRuleDriver implements AppRuleDriver {
         ctx.put(CTX_BUBBLE_SITE_NAME, getSiteName(matcher));
         ctx.put(CTX_BUBBLE_APP_NAME, app.getName());
         ctx.put(CTX_BUBBLE_DATA_ID, getDataId(requestId));
+
+        String locale = filterRequest.getAccount().getLocale();
+        if (empty(locale)) locale = configuration.getDefaultLocale();
+        ctx.put(CTX_ACCOUNT_LOCALE, locale);
+        ctx.put(CTX_ACCOUNT_LANG, LocaleUtil.getLang(locale));
         return ctx;
     }
 
diff --git a/bubble-server/src/main/java/bubble/rule/bblock/BubbleBlockRuleDriver.java b/bubble-server/src/main/java/bubble/rule/bblock/BubbleBlockRuleDriver.java
index c6dee270..d1508c64 100644
--- a/bubble-server/src/main/java/bubble/rule/bblock/BubbleBlockRuleDriver.java
+++ b/bubble-server/src/main/java/bubble/rule/bblock/BubbleBlockRuleDriver.java
@@ -384,8 +384,8 @@ public class BubbleBlockRuleDriver extends TrafficAnalyticsRuleDriver implements
     private static final String CTX_BUBBLE_BLACKLIST = "BUBBLE_BLACKLIST_JSON";
     private static final String CTX_BUBBLE_WHITELIST = "BUBBLE_WHITELIST_JSON";
 
-    @Override protected Map<String, Object> getBubbleJsContext(String requestId, Map<String, Object> filterCtx) {
-        final Map<String, Object> ctx = super.getBubbleJsContext(requestId, filterCtx);
+    @Override protected Map<String, Object> getBubbleJsContext(FilterHttpRequest filterRequest, Map<String, Object> filterCtx) {
+        final Map<String, Object> ctx = super.getBubbleJsContext(filterRequest, filterCtx);
         final BubbleBlockConfig bubbleBlockConfig = getRuleConfig();
         if (bubbleBlockConfig.inPageBlocks()) {
             final BlockDecision decision = (BlockDecision) filterCtx.get(FILTER_CTX_DECISION);
diff --git a/bubble-server/src/main/resources/bubble/rule/social/block/JsUserBlockerRuleDriver.js.hbs b/bubble-server/src/main/resources/bubble/rule/social/block/JsUserBlockerRuleDriver.js.hbs
index 6469317e..80e7ec3f 100644
--- a/bubble-server/src/main/resources/bubble/rule/social/block/JsUserBlockerRuleDriver.js.hbs
+++ b/bubble-server/src/main/resources/bubble/rule/social/block/JsUserBlockerRuleDriver.js.hbs
@@ -153,8 +153,10 @@ function {{JS_PREFIX}}_show_app_details() {
     }
     detailsDiv.style.display = 'block';
     // add rows for blocked users...
-    blocks = blocks.slice(); // copy first, then sort
-    blocks.sort();
+    blocks = blocks.slice(); // copy first, then sort case insensitive using user's locale
+    blocks.sort(function (a, b) {
+        return a.localeCompare(b, '{{ACCOUNT_LANG}}', {'sensitivity': 'base'});
+    });
     if ({{JS_PREFIX}}_unblocked_users_needs_refresh) {
         const refreshControl = document.createElement('a');
         refreshControl.addEventListener("click", function (e) {
diff --git a/utils/cobbzilla-utils b/utils/cobbzilla-utils
index 3de70e3b..f4e97cba 160000
--- a/utils/cobbzilla-utils
+++ b/utils/cobbzilla-utils
@@ -1 +1 @@
-Subproject commit 3de70e3b1e5109a0d1bf41e8d6e73358236d5e8f
+Subproject commit f4e97cba4c2a47622ef648b4c94dee04e4ba4805