Legacy Animation Scale Unpredictable if FBX Import Setting Read/Write Enabled = false

UnityIssueTracker_LegacyAnimationScale_Example

Version: 1.0

Questions

1. Anyone else experiencing this issue?

2. Will the issue exist with mechanim?

3. Will the issue exist with Unity 5?

4. Any other workarounds?

Bug

• Depending on fbx import settings, the scale of model meshes are dramatically off starting the moment the legacy animation plays. It is obvious.

• Reproduction 100% (10 of 10 attempts) on device

• Tested device(s): iPhone 4, iOS 7.1.2. Probably others.

• Tested Unity Editor(s): Unity4.6.7p3

• Workaround (see 3a.) is not desirable

Setup Instructions

1. Set 'Read/Write Enabled" (RWE) to true/false on /Assets/Models/props.fbx

2. Run in editor... no bug.

3. Run on device...

   • 3a. If (RWE) is true, no bug.

   • 3b. If (RWE) is false, there is a clear and consistent bug.

Play Instructions

1. Run the scene

2. Hold mouse button 0 down to play animation "up"

3. Release mouse button 0 to play animation "down"

Project

• Not attached due to legal/copyright restrictions

Screenshots

• Screenshot of 3a (UnityIssueTracker_LegacyAnimationScale_Example_3a.jpg)

• Screenshot of 3b (UnityIssueTracker_LegacyAnimationScale_Example_3b.jpg)