Search Issue Tracker

Not Reproducible



Found in


Issue ID




Canvas stops rendering: d3d11: attempt to lock null vertex buffer when tooltips moved to other Canvas



Steps to reproduce:
1. Open the attached project(Equilibrium of
2. Open the Assets/MainMenu.unity scene
3. Play the Scene
4. Load save slot 2
5. Find an enemy (use W,S,A,D to move)
6. In the battle select a spell, hover over an enemy but does not use the selected spell
7. Select a spell again, hover over the selected spell level and right after try to select an enemy (which is not visible)
8. Observe, the green square will disappear as Canvas(Canvas Tooltip (New2)) stops rendering

Expected result: Canvas should render normally
Actual result: Canvas stops rendering

Unable to test with 5.3 and 5.4
Unable to reproduce with a new project
Log file has reported:
d3d11: failed to create vertex buffer of size, d3d11: attempt to lock null vertex buffer (with Windows 7 and Windows 8.1)
Log file has reported:
d3d11: failed to create vertex buffer of size 7392
d3d11: failed to create index buffer of size 744
Assertion failed on expression: 'SUCCEEDED(hr)'
(Filename: C:\buildslave\unity\build\Runtime/GfxDevice/d3d11/D3D11Window.cpp Line: 214)
Assertion failed on expression: 'SUCCEEDED(hr)' (Windows 10)
With Windows 10 Unity crashes/freezes
When you hover over an enemy the Tooltip Container is moved to Canvas Tooltip (New2)
When you hover over a spell level the Tooltip Container is moved to CanvasMain

Reproduced with: 5.5.0f3, 5.5.1f1, 5.5.1p4, 5.6.0b9

Comments (2)

  1. C1f75a5a5ebcee15fc25b924ec455cbb?d=mm


    Nov 25, 2017 12:48

    Why is this marked as not reproducible? I've got a response from the QA team that they were able to reproduce this issue.

  2. 41b6d8f525c083ee40a5057a1711b5a3?d=mm


    Jul 05, 2017 11:49

    Hi, we have the same Problem (confirmed by Unity) - do you know if thereĀ“s any workaround?

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.