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Fixed in Unity 2017.2
Votes
27
Found in
5.5.0f3
Issue ID
859385
Regression
Yes
'Look rotation viewing vector is zero' is shown, when the gameobject has an UI component and 2D view is turned on
If Canvas has a gameobject which has Rect Transform width or height set to 0 and this gameobject has a child with an UI element, a message 'Look rotation viewing vector is zero' is shown, when 2D view is turned on or the child is selected with Rectangle tool.
Reproduction steps:
1. Open the attached file 'case_859385_smallerProject';
2. Select Canvas/GameObject/Button;
3. Turn on 2D View in the Scene window;
4. Observe Console messages;
Reproduced with: 5.5.0f3, 5.6.0a1, 5.6.0b1
Not reproducible: 5.3.1f1, 5.4.1f1
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lindsaytalbot
Mar 17, 2017 01:51
Related to
https://issuetracker.unity3d.com/issues/resizing-parent-recttransform-when-child-recttransform-is-selected-results-in-look-rotation-viewing-vector-is-zero-error
Can also be caused for no reason when adding TextMeshProUGUI elements. Disabling the affected element stops the messages
TSabos
Feb 28, 2017 17:15
This is very cumbersome to work around due to it making the editor crawl to "5fps" due to editor spam.
Verified changing to .0001 stops the spam.