I am a new Ph.D. student. The professor has announced a new idea for a quick paper project and invited us to discuss about it. At the end of the discussion, he asked who's interested and I asked explicitly to join the project. I found out later that the professor is meeting with some of his students (excluding me) and they have done a progress. I asked him via email if I can join future discussion and if he can share the progress with me. He did share a documentation of the progress but he's still meeting with few of his students without me. What annoys me the most is that I am the only student who worked on related topics during my master's and still doing so. Involving me would have been very beneficial in every aspect.
I can't help it but taking it personally! Is this normal in research groups? What actions should I take now?