Disappearing transparent geometry

[zbych]

In some cases when camera moves around object (transparent object) a part of this object disappear. As you can see on second image, a part of object is missing.
Is it possible to set some kind of flag to disable this geometry "culling" (the back-face culling is disabled for this object)?
When I disable transparency for this object it is rendered ok.

[EgonOlsen]

It's unlikely culling but maybe transparency sorting. But i'm not sure what i'm looking at here, so it's hard to tell...what is this...thing...in the center of the image? Do you have a view from another perspective?

[zbych]

I have figured it out, it was my fault - the missing geometry was discarded by depth test, because it was covered by other object rendered to depth buffer only.