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# Known bugs and issues

Here we list several known bugs along with potential solutions when available and also those that are currently unresolved with links to the appropriate tickets.

> - Display bugs: Mayavi, and VTK, heavily use hardware rendering, as a result are very sensitive to hardware rendering bugs. Common issues include surfaces showing up as black instead of colored (mostly on windows or in virtual machines, I believe), z-ordering bugs where hidden triangles are displayed in front of the triangles that should hide them (a common bug on Linux with intel graphics cards), or the rendering windows becoming grey when the focus is moved out (often seen on Linux, when compiz is enabled). The solution is most often simply to turn off hardware rendering in the system settings (turn off compiz under Linux) or change graphics-card drivers (under Linux, try switching between the open source one, and the proprietary one).
> - Crash when adding list items https://svn.enthought.com/enthought/ticket/1813 : Crashing list editor on Linux with wx backend when adding or removing list items. In Mayavi this happens for instance when adding or removing contours.

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