Top icons of STS not visible - spring-tool-suite

Question

My top icons of run, debug search and all icons are not visible
Please have a look
I have also tried discarding this STS and tried another one. Faced same issues. Icons vanish and sometimes STS fails to start.
Another solution was to customize perspective but, when i tried to do that,
1. Window -> Perspective-> Custom Perspective
-- Error Details --
Date: Thu Dec 29 10:36:52 IST 2016 Message: Unhandled event loop
exception Severity: Error Product: Spring Tool Suite
3.8.3.201612191351-RELEASE (org.springsource.sts.ide) Plugin: org.eclipse.ui Session Data:
eclipse.buildId=3.8.3.201612191351-RELEASE-e46 java.version=1.8.0_51
java.vendor=Oracle Corporation BootLoader constants: OS=linux,
ARCH=x86_64, WS=gtk, NL=en_IN Framework arguments: -product
org.springsource.sts.ide Command-line arguments: -os linux -ws gtk
-arch x86_64 -product org.springsource.sts.ide -clean
Exception Stack Trace:
java.lang.StackOverflowError
at org.eclipse.swt.widgets.Control.setLocation(Control.java:1185)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.setFramedControlLocation(ImageBasedFrame.java:124)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.access$0(ImageBasedFrame.java:120)
at org.eclipse.e4.ui.widgets.ImageBasedFrame$4.controlMoved(ImageBasedFrame.java:109)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:225)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5227)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1366)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1345)
at org.eclipse.swt.widgets.Control.setBounds(Control.java:1100)
at org.eclipse.swt.widgets.Composite.setBounds(Composite.java:1527)
at org.eclipse.swt.widgets.ToolBar.setBounds(ToolBar.java:589)
at org.eclipse.swt.widgets.Control.setLocation(Control.java:1187)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.setFramedControlLocation(ImageBasedFrame.java:124)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.access$0(ImageBasedFrame.java:120)
at org.eclipse.e4.ui.widgets.ImageBasedFrame$4.controlMoved(ImageBasedFrame.java:109)
at ......................
**
Update 1 :
**
Following error is seen immediately after I start STS
!SESSION 2017-01-02 09:42:44.171 -----------------------------------------------
eclipse.buildId=3.8.2.201610040743-RELEASE-e46 java.version=1.8.0_51
java.vendor=Oracle Corporation BootLoader constants: OS=linux,
ARCH=x86_64, WS=gtk, NL=en_IN Framework arguments: -product
org.springsource.sts.ide Command-line arguments: -os linux -ws gtk
-arch x86_64 -product org.springsource.sts.ide
This is a continuation of log file /home/swapnil/Documents/code/workspaces/olabsWorkspace/.metadata/.bak_0.log
Created Time: 2017-01-02 09:44:58.413
!ENTRY org.eclipse.equinox.event 4 0 2017-01-02 09:44:58.414
!MESSAGE Exception while dispatching event org.osgi.service.event.Event [topic=org/eclipse/e4/ui/model/ui/ElementContainer/children/ADD] {ChangedElement=org.eclipse.e4.ui.model.application.ui.basic.impl.TrimBarImpl#65d23aa3 (elementId: org.eclipse.ui.main.toolbar, tags: [], contributorURI: null) (widget: Composite {}, renderer: org.eclipse.e4.ui.workbench.renderers.swt.TrimBarRenderer#63bdf82d, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null) (side: Top), org.eclipse.e4.data={ChangedElement=org.eclipse.e4.ui.model.application.ui.basic.impl.TrimBarImpl#65d23aa3 (elementId: org.eclipse.ui.main.toolbar, tags: [], contributorURI: null) (widget: Composite {}, renderer: org.eclipse.e4.ui.workbench.renderers.swt.TrimBarRenderer#63bdf82d, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null) (side: Top), AttName=children, EventType=ADD, Position=11, Widget=Composite {}, NewValue=org.eclipse.e4.ui.model.application.ui.menu.impl.ToolBarImpl#72f9cd3f (elementId: org.eclipse.m2e.editor.MavenPomEditor, tags: [Draggable], contributorURI: null) (widget: ToolBar {}, renderer: org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer#79177bc, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null)}, AttName=children, EventType=ADD, Position=11, Widget=Composite {}, NewValue=org.eclipse.e4.ui.model.application.ui.menu.impl.ToolBarImpl#72f9cd3f (elementId: org.eclipse.m2e.editor.MavenPomEditor, tags: [Draggable], contributorURI: null) (widget: ToolBar {}, renderer: org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer#79177bc, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null)} to handler org.eclipse.e4.core.di.internal.extensions.EventObjectSupplier$DIEventHandler#374d3128
!STACK 0
java.lang.StackOverflowError
at org.eclipse.swt.events.ControlEvent.<init>(ControlEvent.java:35)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:225)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1366)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1345)
at org.eclipse.swt.widgets.Control.setBounds(Control.java:1100)
at org.eclipse.swt.widgets.Composite.setBounds(Composite.java:1524)
at org.eclipse.swt.widgets.ToolBar.setBounds(ToolBar.java:589)
at org.eclipse.swt.widgets.Control.setLocation(Control.java:1187)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.setFramedControlLocation(ImageBasedFrame.java:124)
at org.eclipse.e4.ui.widgets.ImageBasedFrame.access$0(ImageBasedFrame.java:120)
at org.eclipse.e4.ui.widgets.ImageBasedFrame$4.controlMoved(ImageBasedFrame.java:109)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:225)