Strange Bug? when using Extrude and Pose Transform

[Sui]

I found this strange behaviour when using several tools with no back faces. Freeze, surface and voxal extrude tools all have this behaviour when performing lasso selection. 

[Oleg Shapov]

6 hours ago, Sui said:

Freeze, surface and voxal extrude tools all have this behaviour when performing lasso selection. 

May I know more details?

[Sui]

1 hour ago, Oleg Shapov said:

May I know more details?

It happens when use generally every tools that does extrude or freeze with Ignore Back Face checked on. I simply perform a lasso selection with them on some objects. It happens randomly, even on plain surface. On an symmetrical object, it could happen on one side and not on the other.

I did not check Depth Limit or On Plane. The artifacts do not appear when Ignore Back Face is turned off.

[Oleg Shapov]

38 minutes ago, Sui said:

It happens randomly, even on plain surface.

In order to describe the problem to the developer, I need steps to reproduce the bug. Or a problematic scene. If you have such an opportunity, please send it.ScreenCaptureProject1205.mkv