diff --git a/libs/remix-ui/run-tab/.babelrc b/libs/remix-ui/run-tab/.babelrc
index ccae900be4..09d67939cc 100644
--- a/libs/remix-ui/run-tab/.babelrc
+++ b/libs/remix-ui/run-tab/.babelrc
@@ -1,12 +1,4 @@
 {
-  "presets": [
-    [
-      "@nrwl/react/babel",
-      {
-        "runtime": "automatic",
-        "useBuiltIns": "usage"
-      }
-    ]
-  ],
+  "presets": ["@nrwl/react/babel"],
   "plugins": []
 }
diff --git a/libs/remix-ui/run-tab/src/lib/actions/index.ts b/libs/remix-ui/run-tab/src/lib/actions/index.ts
index c659b2a802..9ee2446b1c 100644
--- a/libs/remix-ui/run-tab/src/lib/actions/index.ts
+++ b/libs/remix-ui/run-tab/src/lib/actions/index.ts
@@ -548,7 +548,6 @@ export const clearInstances = () => {
 
 export const loadAddress = (contract: ContractData, address: string) => {
   if (!contract) return dispatch(displayPopUp('No compiled contracts found.'))
-  clearInstances()
   loadContractFromAddress(address,
     (cb) => {
       dispatch(displayNotification('At Address', `Do you really want to interact with ${address} using the current ABI definition?`, 'OK', 'Cancel', cb, null))
diff --git a/libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx b/libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx
index dd13a983ef..4bd6c7df96 100644
--- a/libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx
+++ b/libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx
@@ -62,13 +62,7 @@ export function ContractGUI (props: ContractGUIProps) {
       return 'cannot encode empty arguments'
     }
     const multiJSON = JSON.parse('[' + multiString + ']')
-    let encodeObj
-
-    if (props.evmBC) {
-      encodeObj = txFormat.encodeData(props.funcABI, multiJSON, props.evmBC)
-    } else {
-      encodeObj = txFormat.encodeData(props.funcABI, multiJSON, null)
-    }
+    const encodeObj = txFormat.encodeData(props.funcABI, multiJSON, null)
     if (encodeObj.error) {
       console.error(encodeObj.error)
       return encodeObj.error
diff --git a/libs/remix-ui/tabs/src/lib/remix-ui-tabs.tsx b/libs/remix-ui/tabs/src/lib/remix-ui-tabs.tsx
index 740dfae507..3c791d1c1b 100644
--- a/libs/remix-ui/tabs/src/lib/remix-ui-tabs.tsx
+++ b/libs/remix-ui/tabs/src/lib/remix-ui-tabs.tsx
@@ -36,7 +36,7 @@ export const TabsUI = (props: TabsUIProps) => {
     const classNameImg = 'my-1 mr-1 text-dark ' + tab.iconClass
     const classNameTab = 'nav-item nav-link d-flex justify-content-center align-items-center px-2 py-1 tab' + (index === currentIndexRef.current ? ' active' : '')
     return (
-      <div onClick={() => { props.onSelect(index); currentIndexRef.current = index; setSelectedIndex(index) }} ref={el => { tabsRef.current[index] = el }} className={classNameTab} title={tab.tooltip}>
+      <div ref={el => { tabsRef.current[index] = el }} className={classNameTab} title={tab.tooltip}>
         {tab.icon ? (<img className="my-1 mr-1 iconImage" src={tab.icon} />) : (<i className={classNameImg}></i>)}
         <span className="title-tabs">{tab.title}</span>
         <span className="close-tabs" onClick={(event) => { props.onClose(index); event.stopPropagation() }}>
@@ -88,6 +88,11 @@ export const TabsUI = (props: TabsUIProps) => {
             tabsElement.current = domEl
             tabsElement.current.addEventListener('wheel', transformScroll)
           }}
+          onSelect={(index) => {
+            props.onSelect(index)
+            currentIndexRef.current = index
+            setSelectedIndex(index)
+          }}
         >
           <TabList className="d-flex flex-row align-items-center">
             {props.tabs.map((tab, i) => <Tab className="py-1" key={tab.name}>{renderTab(tab, i)}</Tab>)}