Transform issues in WebGL Builds only with Unity 2017

As the title suggests, after updating to Unity 2017 I created a WebGL build and there appears to be some serious issues with gameobjects and their transforms. The issue is only present in WebGL builds (iOS, Android, Facebook Gameroom all the horses face in the direction they run in). Is this a bug people are aware of? Will I have to add additional code to catch and correct this in WebGL?

 

Just reverted to Unity 5.6.2 for now, am a little overworked at the moment but will try to create a minimal project to submit this soon (my gut feeling is that these horses are all follow splines and there'll be some sort of floating point precision issue present on WebGL thats not there on other platforms, but then I am making wild guesses with that)

 

Ok have been working on this for a while now, part 1 is just the test of the LookRotation function and the spline following function, the cube points longwise forwards as expected and travels around the spline as it does in editor:

http://www.blueomega.me/WebGLLookTest/

Code (CSharp):

1.     public void handleRotation(Vector3 aTarget) {
2.         Vector3 diff = aTarget-transform.position;
3.         if (diff.magnitude > 0f) {
4.             Quaternion targetRot = Quaternion.LookRotation (aTarget - transform.position);
5.  
6.             this.transform.rotation = Quaternion.Slerp (transform.rotation, targetRot, 0.1f);
7.         }
8.     }

After this I tried swapping out the cube for a horse, in editor it works perfectly again (as it does on all other platforms).

However WebGL looks like this (the horse is -90 degrees on the y axis "wrong")

http://www.blueomega.me/WebGLLookTest3/


Note that if I remove the animator component from the horse it goes back to looking "right":

http://www.blueomega.me/WebGLLookTest4/


I have submitted a bug report for this now but never seem to receive any sort of e-mail confirmation that a bug has been reported.

 

Do you have a ticket for your bug? I just upgraded to 2017 and am getting s similar error on web gl only. Also, only in build, not in editor.

 

To add to this, just downloaded an asset from asset store, added an animator to one of the characters and built for webgl. In the build the character with an animator is slightly turned to the side, running in editor he is properly facing forward.

See attached image for side by side comparison, camera angles are exactly the same.

 

Bug reported with repro case, bug report here:
https://fogbugz.unity3d.com/default.asp?945641_nqibk051vgddc148
[EDIT:] Bug number 945641 [END EDIT]

This MIGHT be the same bug as reported here:
https://issuetracker.unity3d.com/is...s-between-editor-slash-pc-and-webgl-slash-mac
which is marked as fixed in future release. Would be nice to know which though, patch or 2017.2 in september?

In that bug they mention generic animation though, this is humanoid.

@Marco-Trivellato could you shed some light on this? This is holding back my release atm so would like to know if I need to try to downgrade my project to 5.6 or not

 

Oh, thanks, didn't know

I see, so if I use 2017.2 beta then this problem goes away? I can live with a beta in that case

 

Did using the beta help for you at all? I just tried it on 2017.2.0b9 and it's as pretty horrific still on my side at least.



Edit

I tell a lie, the code that made it stay "pretty horrific" was my code that tried to correct the objects rotation to compensate for the old bug. On 2017.2.0b9 everything so far is working as expected.