TextMesh Pro TextMeshPro displays white blocks when changing localscale in world space UI

I've isolated what I think is a bug. Here are steps to reproduce:

1) Open new scene
2) Create UI image
3) Create 'TextMeshPro - Text' element (Under UI)
4) Attach the text element as child of image
5) Attach a script to image that modifies localscale (I've attached a basic one)
6) Change canvas to be 'World Space' render mode
7) At runtime, change localscale of image dynamically via script
8) Text turns into white boxes


Unity 2017.1.3f1
TextMesh Pro 1.0.56.0b3

 

Thanks a lot man, that did it. We were racking our brains over this for quite awhile today.

If you're ever near the zSpace office, we'll buy you a beer.

 

Thanks a lot! this helped

 

Hello! Is it stil actual at 2020? On mobile device for some reason I see white squares when non-uniformly tweening / scaling text. but in Editor it's ok. Should we use uniform or reason may be in something other? Z scale isn't zero.

 

Thank you for fast answer, we'll try ot out ASAP

 

Hello again! I've two cases of this, and in first uniform + clamp helped, but in second - not. I've checked lossyScale of text Transform and all its parents Transforms, - all are ok, no zero.
Tryed:
- moving TMP_Text closer to root
- duplicating whole object
- deleting geometry subobject
- recreation of TMP_Text Component

Only if I Duplicate TMP_Text outside of prefab / Canvas to simple scene helped.

Now I've reacreated Transform too, waiting for build to finish to check result.

 

I've tryed to make repro-project, but in clean project with same Unity / TMP version problem disappear

And we're using Unity 2019.2.2f1 and unfortunately can't upgrade engine and TMP to latest 'cause game-release deadline's ahead.

 

Also, texture is inside TMP_Font asset, which is in Resources folder, and there's other usages of this font / material in project and they look correct

 

Calling TMP_Text.ForceMeshUpdate() after enabling object helped! Thank you Stephan for help!

 

Having this pop up when working in editor on 2020.2.0a12 with worldspace UI using TextmeshPro, it only shows in the game view not the scene view. Works just fine in a build on the Oculus Quest though?

 

Persistent white blocks around the text, only in game view, they get stronger in opacity when you move the game camera further back but not the scene view camera.

Issue persists with 3.0.0 Preview 12 and 13 from my tests so far.
@Stephan_B

 

Sampling point size set to Auto and Padding set to 5, those were the default values I never changed them. Will try playing around with them now although changing that for other fonts will be tedious!

Edit: Just changed padding to 9, unselected auto for sampling point size, it was at 59 so I left it. Changed packing method to Optimum, generated then saved. It is fixed now. Most unusual this just cropped up when upgrading the package and engine version.

I have had this scene working fine for 5-6 months now this issue has just cropped up, recently moved up 2 alpha engine versions on the 2020.2 alpha branch and upgraded TextmeshPro Package preview versions of 3.0.0 a few times during then also.

 

This was really useful to know, thanks for writing this advice up.

Effectively I left all settings at default when we started using TextMeshPro as everything it did looked fine. Then when upgrading alpha engine versions, something must have changed but nothing was changed on the fonts or textmeshpro font files since their creation.

I usually have to change texture compression back to ESTC when changing engine version (through the build settings menu). So perhaps that interfered somehow? Even though the TMPro text looked fine when using ESTC before!

 

Also in our case reason was in Soft Mask plugin + TextMeshPro 3.2.0