https://github.com/provectus/kafka-ui/issues/3043#issuecomment-1359684752 Hi, Can I work on this issue ? assign to me. Hi @Haarolean , this issue seems to be front-end issue. Probably we need to change the label to front-end instead of back-end. I can fix it though it is front-end issue. 
Brokers:  Broker's configs search by key is case-sensitive

**Describe the bug** (Actual behavior)
Search in Broker configs is case-sensitive

**Expected behavior**
Search of Broker's configs should work as in other components and should not be case- sensitive 

**Set up**
https://www.kafka-ui.provectus.io/

**Steps to Reproduce**
<!-- We'd like you to provide an example setup (via docker-compose, helm, etc.) 
to reproduce the problem, especially with a complex setups. -->

1. Navigate to Brokers
2. Select the Broker
3. Turn to Configs tab
4. Search for config

**Screenshots**

https://user-images.githubusercontent.com/104780608/218951551-e8c528e1-72dc-477a-b474-7d5bd1989e6a.mov





kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx
kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx
diff --git a/kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java b/kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java
index 4ce282b6cc5..9388b914d33 100644
--- a/kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java
+++ b/kafka-ui-e2e-checks/src/main/java/com/provectus/kafka/ui/pages/ksqldb/KsqlQueryForm.java
@@ -3,6 +3,7 @@
 import static com.codeborne.selenide.Condition.visible;
 import static com.codeborne.selenide.Selenide.$$x;
 import static com.codeborne.selenide.Selenide.$x;
+import static com.codeborne.selenide.Selenide.sleep;
 
 import com.codeborne.selenide.CollectionCondition;
 import com.codeborne.selenide.Condition;
@@ -36,6 +37,7 @@ public KsqlQueryForm waitUntilScreenReady() {
   @Step
   public KsqlQueryForm clickClearBtn() {
     clickByJavaScript(clearBtn);
+    sleep(500);
     return this;
   }
 
diff --git a/kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx b/kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx
index 8f909facac0..ad6c5087a0f 100644
--- a/kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx
+++ b/kafka-ui-react-app/src/components/Brokers/Broker/Configs/Configs.tsx
@@ -34,7 +34,11 @@ const Configs: React.FC = () => {
 
   const getData = () => {
     return data
-      .filter((item) => item.name.toLocaleLowerCase().indexOf(keyword) > -1)
+      .filter(
+        (item) =>
+          item.name.toLocaleLowerCase().indexOf(keyword.toLocaleLowerCase()) >
+          -1
+      )
       .sort((a, b) => {
         if (a.source === b.source) return 0;
 
