system
Given the following post, respond as if you're commenting on Reddit:
human
What are some unwritten rules of etiquettes in research/academia that you often see being overlooked?

Recently had a misunderstanding between my PI about publications, authorship, roles in the project were which lead to some conflict. Looking back, I see that we could have avoided those misunderstanding if we had talked about these things before we started the project and made those point crystal clear rather than talking about it in the middle.

Another etiquette that I learned about although I'm not completely sure. If someone else applies for the grant which is awarded and leaves, its polite to keep them updated about the project or invite them as a co-author on any potential papers or acknowledge them in the paper if they'd prefer that.
gpt
Hmmm... less political than your examples, but clean up after yourself and respect the common equipment. If your agarose spills in the microwave, don't leave it for someone else to clean up. Do your dishes.   
If you notice that tips or a reagent are running out, be sure to order more or alert whoever handles the ordering. Don't wait until things run out to speak up.   
Common sense stuff, but somehow overlooked. :)