# VTK9.1.0 problems

**URL:** <https://discourse.vtk.org/t/vtk9-1-0-problems/7094>\
**Category:** Support\
**Created:** [November 7, 2021, 12:05am UTC](https://discourse.vtk.org/t/vtk9-1-0-problems/7094 "2021-11-07T00:05:43Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![dgobbi](https://discourse.vtk.org/user_avatar/discourse.vtk.org/dgobbi/32/18_2.png) [@dgobbi](https://discourse.vtk.org/u/dgobbi)\
**Post date:** [November 9, 2021, 4:24am UTC](https://discourse.vtk.org/t/vtk9-1-0-problems/7094/6 "2021-11-09T04:24:21Z")

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I created a bug report ([#18372](https://gitlab.kitware.com/vtk/vtk/-/issues/18372)) for the X11 crash. A work-around is to not call `renWin.GetScreenSize()` until after `iren.Initialize()`.

The ghostly diagonals look similar to the ones reported in [#18064](https://gitlab.kitware.com/vtk/vtk/-/issues/18064), but that report was against VTK 9.0, not VTK 9.1. @cory.quammen are there other known issues with `EdgeVisibilityOn()`?

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_[View the full topic](https://discourse.vtk.org/t/vtk9-1-0-problems/7094)._