Hello
I'm not sure if this is the same or not, but had wedge resection on lower left lobe in 2021 and surface healed nicely. A couple months afterwards I felt something slightly moving inside near one of the incisions. This could happen when getting out of bed , deep breath, etc. It wasn't painful., though. The Doctor couldn't explain what it was and eventually this movement feeling went away. My opinion is that after surgery there is scar tissue on the lung surface as well as scar tissue and nerve damage at the incision site. During chest movements and breathing, the lungs normally are moving a bit inside the chest cavity and i think those scar areas were maybe rubbing on each other or the scar on the lung was rubbing on the chest wall and that is what I was feeling. I just don't know but also at that time I still had some "post surgery" chest fluid (pleural effusion) and I don't know if that was making it easier for things to move around. As I said, that went away and most other pain went away, After a year or so the left side felt pretty normal.

I also had upper right lobectomy in 2019 and still have some surface skin/nerve numbness and still feel some chest tightness on the right side when I take a deep breath.
Hope it gets better for you.