[Layover] / [Menu] Invalid positioning of hidden Layovers in a dialog window

[showme79]

Describe the bug In

To Reproduce Steps to reproduce the behavior:

1. Create a Dialog
2. Add two containers: one is display: block, other is display: hidden
3. Add one-one SelectField into the two containers (simplified mode false)
4. Opening the SelectField in the first (block) container, the DropDown shows correctly
5. Turn the container visible (using a state for example) and open the SelectField

Expected behavior A clear and concise description of what you expected to
The DropDowns must be rendered to the proper position, below the TextField part of SelectField.

Screenshots
Good one in the first container:

Bad one in the second container after making it visible:

Desktop (please complete the following information):

• OS: any
• Browser: any
• Version: any
• React MD version: 1.12.3

Smartphone (please complete the following information):
Not tested

Additional context
I have found that the problem is originated using node = node.offsetParent; in parent dialog popup. The fix node = node.offsetParent || node.parentNode; fixed the problem.