# the actor becomes abnormal in display.

**URL:** https://discourse.vtk.org/t/the-actor-becomes-abnormal-in-display/10849
**Category:** Development
**Created:** [March 2, 2023, 6:54am UTC](https://discourse.vtk.org/t/the-actor-becomes-abnormal-in-display/10849 "2023-03-02T06:54:20Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![seeby](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/s/2acd7d/32.png) [@seeby](https://discourse.vtk.org/u/seeby)
#### Post date: [March 2, 2023, 6:54am UTC](https://discourse.vtk.org/t/the-actor-becomes-abnormal-in-display/10849/1 "2023-03-02T06:54:20Z")

</div>

the actor becomes abnormal in display. when zooming the actors, the bone actor become blue (the color of the knife actor) when the knife actor is out of the view.  
who knows the cause of this phenomenon？  
 ![33300_00_00--00_00_20](https://discourse.vtk.org/uploads/default/original/2X/3/3d5a565ef343ccda472be8c11bc80d537836ed37.gif)