Weird artifacts only in rendermode? I've ran into some troubles while rendering transparent materials. These issues only occur when using
rendermode (F12). All render settings are default. I'm rendering on a GPU (Nvidia GTX 1070).

In viewport previews seem to be just fine and don't have the triangulated white faces

Here's the outliner and the shader used, maybe that could help solve the issue.
The schrinkwrap modifiers are disabled in viewports but not for rendering: