I have evidence including support that clearly states that the BUG I discovered is normal mechanics.
I will not send a screenshot of the support or I will get a ban. But the bug is that you set traps behind the galls and let these camps attack you and then clear them.
When you do this and destroy the traps, the traps will remain invisible to you and you can use them.
I reported this bug privately and nothing, I like travian and that's why I'm so toxic now.