Dear Design Studio community,
I am getting a lot of errors in my error log as soon as I open my Dashboard built with Design Studio 1.5.
The weird thing is the errors seem to come from a plug-in I do not even know about. I do not think I am using it in my dashbaord or perhaps it is something in background I do not know about.
The first error I get in the list is : "Problems occurred when invoking code from plug-in: "org.eclipse.e4.ui.workbench.swt"."
The beginning of the stack trace is : org.eclipse.swt.SWTException: Widget is disposed at org.eclipse.swt.SWT.error(SWT.java:4441)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
etc...
And then I get many errors related to this first one (I attached two screenshots to show you the errors).
For example the next error is : "Exception occured while rendering: org.eclipse.e4.ui.menu.impl.ToolBarImpl@1e7830a..."
I get errors also with the impl.PlaceholderImpl@1dd1c3d or even the TrimmedWindowsImpl@433946.
Finally, I have some weird local variables mentioned in the error log like context and ctrl, which are not even variables I am declaring myself. I cannot see them anywhere in my coding. Here is an example of one of these errors.
I do not know where these issues come from.
It seems the dashboard is running well(no apparent issue when I run it Locally or on BI platform) but these errors are getting on my nerves. I do not like to see an error log full of red circles. 
Anybody knows what could be the root cause of this?
Is it an issue with some components I would have badly installed?
Can this happen even if I am not using these components in the dashboard?
Thank you very much for your attention.
Best regards.
Jacques-Antoine Ollier