diff --git a/apps/remix-ide-e2e/src/commands/goToVMTraceStep.ts b/apps/remix-ide-e2e/src/commands/goToVMTraceStep.ts
index 56616f1ac9..5a3ae6ae82 100644
--- a/apps/remix-ide-e2e/src/commands/goToVMTraceStep.ts
+++ b/apps/remix-ide-e2e/src/commands/goToVMTraceStep.ts
@@ -12,7 +12,10 @@ class GoToVmTraceStep extends EventEmitter {
 function goToVMtraceStep (browser: NightwatchBrowser, step: number, incr: number, done: VoidFunction) {
   browser.execute(function (step) { (document.getElementById('slider') as HTMLInputElement).value = (step - 1).toString() }, [step])
     .setValue('*[data-id="slider"]', new Array(1).fill(browser.Keys.RIGHT_ARROW))
-    .pause(1000)
+    .execute((step) => {
+      (document.querySelector('*[data-id="slider"]') as any).internal_onmouseup({ target: { value: step }})
+    }, [step])
+    .pause(10000)
     .perform(() => {
       done()
     })
diff --git a/apps/remix-ide/src/app/files/fileManager.ts b/apps/remix-ide/src/app/files/fileManager.ts
index 9c11b5863d..2ad2ea4aa9 100644
--- a/apps/remix-ide/src/app/files/fileManager.ts
+++ b/apps/remix-ide/src/app/files/fileManager.ts
@@ -608,9 +608,10 @@ class FileManager extends Plugin {
       this.events.emit('noFileSelected')
     } else {
       file = this.normalize(file)
-      await this.saveCurrentFile()
       const resolved = this.getPathFromUrl(file)
       file = resolved.file
+      await this.saveCurrentFile()
+      if (this.currentFile() === file) return
       const provider = resolved.provider
       this._deps.config.set('currentFile', file)
       this.openedFiles[file] = file
diff --git a/libs/remix-debug/src/debugger/stepManager.ts b/libs/remix-debug/src/debugger/stepManager.ts
index 6fd2e5fa22..07693ca62f 100644
--- a/libs/remix-debug/src/debugger/stepManager.ts
+++ b/libs/remix-debug/src/debugger/stepManager.ts
@@ -121,6 +121,7 @@ export class DebuggerStepManager {
     if (solidityMode) {
       step = this.resolveToReducedTrace(step, -1)
     }
+    if (this.currentStepIndex === step) return
     this.currentStepIndex = step
     this.triggerStepChanged(step)
   }
@@ -136,6 +137,7 @@ export class DebuggerStepManager {
     if (solidityMode) {
       step = this.resolveToReducedTrace(step, 1)
     }
+    if (this.currentStepIndex === step) return
     this.currentStepIndex = step
     this.triggerStepChanged(step)
   }
@@ -146,12 +148,14 @@ export class DebuggerStepManager {
     if (solidityMode) {
       step = this.resolveToReducedTrace(step, 0)
     }
+    if (this.currentStepIndex === step) return
     this.currentStepIndex = step
     this.triggerStepChanged(step)
   }
 
   jumpTo (step) {
     if (!this.traceManager.inRange(step)) return
+    if (this.currentStepIndex === step) return
     this.currentStepIndex = step
     this.triggerStepChanged(step)
   }
diff --git a/libs/remix-debug/src/solidity-decoder/decodeInfo.ts b/libs/remix-debug/src/solidity-decoder/decodeInfo.ts
index 44c620615a..f141a7e1f9 100644
--- a/libs/remix-debug/src/solidity-decoder/decodeInfo.ts
+++ b/libs/remix-debug/src/solidity-decoder/decodeInfo.ts
@@ -11,6 +11,7 @@ import { Struct as StructType } from './types/Struct'
 import { Int as IntType } from './types/Int'
 import { Uint as UintType } from './types/Uint'
 import { Mapping as MappingType } from './types/Mapping'
+import { FunctionType } from './types/FunctionType'
 import { extractLocation, removeLocation } from './types/util'
 
 /**
@@ -78,6 +79,10 @@ function bool (type) {
   return new BoolType()
 }
 
+function functionType (type, stateDefinitions, contractName, location) {
+  return new FunctionType(type, stateDefinitions, contractName, location)
+}
+
 /**
   * DynamicByteArray decode the given @arg type
   *
@@ -300,7 +305,8 @@ function parseType (type, stateDefinitions, contractName, location) {
     struct: struct,
     int: int,
     uint: uint,
-    mapping: mapping
+    mapping: mapping,
+    function: functionType
   }
   const currentType = typeClass(type)
   if (currentType === null) {
diff --git a/libs/remix-debug/src/solidity-decoder/types/FunctionType.ts b/libs/remix-debug/src/solidity-decoder/types/FunctionType.ts
new file mode 100644
index 0000000000..ffa4b9f1c6
--- /dev/null
+++ b/libs/remix-debug/src/solidity-decoder/types/FunctionType.ts
@@ -0,0 +1,12 @@
+'use strict'
+import { ValueType } from './ValueType'
+
+export class FunctionType extends ValueType {
+  constructor (type, stateDefinitions, contractName, location) {
+    super(1, 8, 'function')
+  }
+
+  decodeValue (value) {
+    return 'at program counter ' + value
+  }
+}
diff --git a/libs/remix-ui/debugger-ui/src/lib/slider/slider.tsx b/libs/remix-ui/debugger-ui/src/lib/slider/slider.tsx
index 06fe05e949..2d4c374770 100644
--- a/libs/remix-ui/debugger-ui/src/lib/slider/slider.tsx
+++ b/libs/remix-ui/debugger-ui/src/lib/slider/slider.tsx
@@ -1,47 +1,42 @@
 import React, { useState, useEffect, useRef } from 'react' // eslint-disable-line
 
 export const Slider = ({ jumpTo, sliderValue, traceLength }) => {
-  const [state, setState] = useState({
-    currentValue: 0
-  })
-
   const onChangeId = useRef(null)
+  const slider = useRef(null)
 
   useEffect(() => {
     setValue(sliderValue)
   }, [sliderValue])
 
   const setValue = (value) => {
-    if (value === state.currentValue) return
-    setState(prevState => {
-      return { ...prevState, currentValue: value }
-    })
-    jumpTo && jumpTo(value)
-  }
-
-  const handleChange = (e) => {
+    if (value === slider.current.value) return
+    slider.current.value = value
     if (onChangeId.current) {
-      window.clearTimeout(onChangeId.current)
+      clearTimeout(onChangeId.current)
     }
     ((value) => {
       onChangeId.current = setTimeout(() => {
-        console.log(value)
-        value = parseInt(value)
-        setValue(value)
+        jumpTo && jumpTo(value)
       }, 100)
-    })(e.target.value)    
+    })(value)
   }
 
+  const handleChange = (e) => {
+    setValue(parseInt(e.target.value))
+  }
+
+  if (slider.current) slider.current.internal_onmouseup = handleChange
+
   return (
     <div>
       <input id='slider'
         data-id="slider"
         className='w-100 my-0'
+        ref={slider}
         type='range'
         min={0}
         max={traceLength ? traceLength - 1 : 0}
-        value={state.currentValue}
-        onChange={handleChange}
+        onMouseUp={handleChange}
         disabled={traceLength ? traceLength === 0 : true}
       />
     </div>