Widgets appear to be offset when launching on to Chrome or other HTML platform

Widgets appear to be offset when launching on to Chrome or other HTML platform. The widget appears to be offset and unclickable until the window for the browser is resized.

1. Open the editor
2. Create a new widget blueprint
3. Add a button to the designer tab
4. Create an on clicked event to print Hello from a print string
5. Save and compile
6. Open the level blueprint
7. Add the widget to the viewport
8. Save all
9. Launch on to Chrome
10. Without resizing the widow try and click the button
11. Notice that the button is not clicked and that the print string does not fire
12. Resize the window
13. Try and click the button again
14. Notice that this time the button can be clicked

Expected: The widget would be clickable when launching on to an HTML5 platform
Result: The widget appears to be offset and unclickable until the window for the browser is resized

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