Love your mod!

but something is driving me crazy, buildings that are destroyed by the several biters and rebuild by construction robots.
There is some times an missing part like tiny bit of Belt or Inserter or Turret or Power Pole.

So far i rebuild everything with my blueprints over and over again. But not automatically and its annoying.

Is this a bug or feature?

This is not a feature, but it is not a Rampant bug either.
Occasionally there are complaints on forums that something similar happens with standart biters. The exact reason for this is unknown

hello, I believe a lot of this is due to energy thief biters spawning the energy sapping crystals. The crystals can be destroyed, but it also destroys the blueprint when it's planted. So you end up seeing missing mining drill blueprints due to crystal blocking placement.

There is nothing in the code about deliberately destroying blueprints. Unfortunately, if a blueprint is destroyed by Factorio because two buildings cannot exist in the same place, then there is nothing I can do.

Maybe, theoretically, if I make it so that player can walk through the crystals. But there is no guarantee that this will help.
I will check, but don't expect it to happen quickly