Buildings that are placed using the Zeus interface seem to loose Collision upon being rotated by the Built-in Zeus rotation function.
the Scripting function setDir seems to not be affected by this behavior, and buildings being rotated by the setDir function preserve their collisions.
This Behavior has been happening since atleast the last Stable version, and can be observed in the current Stable version and on the Dev-Channel aswell.
Video demonstration is available here: https://www.youtube.com/watch?v=vfsWwfTPeg0 (1:06)
The RPT File attached has been taken from the same session as the one used for recording the video demonstration of the bug. {F25801}