# \[4.7.6\] Undo doesn't affect material assignments

**URL:** <https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201>\
**Category:** Rendering\
**Tags:** undo, static-mesh-editor, unreal-engine, question\
**Created:** [May 20, 2015, 9:25am UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201 "2015-05-20T09:25:00Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![anonymous\_user\_c0687f281](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_c0687f281](https://forums.unrealengine.com/u/anonymous_user_c0687f281)\
**Post date:** [May 20, 2015, 9:25am UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/1 "2015-05-20T09:25:00Z")

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Hi there,

I accidentally assigned a wrong material to an element slot in static mesh editor. Couldn’t remember original so I just triggered an undo. Instead, my last change in level editor was revoked.

It seems, that changes in material list aren’t saved in undo protocol.

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**Author:** ![Lovecraft\_K](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Lovecraft\_K](https://forums.unrealengine.com/u/Lovecraft_K)\
**Post date:** [May 20, 2015, 3:39pm UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/2 "2015-05-20T15:39:42Z")

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Hi -

I am not seeing that behavior in 4.7.6. Can you look at my reproduction steps below and see if you are doing anything differently and let me know?

1. Create a New Blank Project with NO Starter Content
2. Add a Sphere Static Mesh from Modes Window to Level at (0,400,200)
3. Move Sphere across platform to (0,-400,200)
4. In Sphere’s Details panel, select dropdown for Material
5. Under View Options, Turn on Engine Content
6. Select Any material
7. Back in Viewport, Select Platform
8. CTRL-Z, Sphere is reselected
9. CTRL-Z, Material assignment is undone
10. CTRL-Z, Sphere moves back to (0,400,200)

Thank You -

Eric Ketchum

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**Author:** ![anonymous\_user\_c0687f281](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_c0687f281](https://forums.unrealengine.com/u/anonymous_user_c0687f281)\
**Post date:** [May 22, 2015, 6:18pm UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/3 "2015-05-22T18:18:44Z")

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Hi Eric,

thanks for investigating this. It works fine in details pane, but not in the _static mesh editor_.

Reproduction steps:

- Double click on a static mesh in content browser
- Change a material
- Press STRG+Z

Video

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**Author:** ![Lovecraft\_K](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Lovecraft\_K](https://forums.unrealengine.com/u/Lovecraft_K)\
**Post date:** [May 26, 2015, 5:34pm UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/4 "2015-05-26T17:34:51Z")

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Hi -

Thank you for your clarification. I was able to reproduce this issue internally and have reported it for further investigation toward a solution, UE-16144 for reference. As soon as we have new information, I will report back here.

Thank You again -

Eric Ketchum

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**Author:** ![nikoliazekter](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@nikoliazekter](https://forums.unrealengine.com/u/nikoliazekter)\
**Post date:** [January 2, 2016, 1:04pm UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/5 "2016-01-02T13:04:10Z")

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It’s 4.10.1 already and this bug is still not resolved.

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**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\
**Post date:** [January 2, 2016, 5:47pm UTC](https://forums.unrealengine.com/t/4-7-6-undo-doesnt-affect-material-assignments/319201/6 "2016-01-02T17:47:16Z")

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Hi nikoliazekter,

There has been no change on status of bug report yet. We will update this post when we see any movement on it. Thank you for update.