I got my hybrid bike serviced 2 days back. Before the service, the handlebar used to turn freely, and the shifter was not stiff.
I had given it because the day before something went wrong with the rear derailleur alignment (the shifter was fine before this as well).
After the service, I am facing two major issues. The shifter for the rear derailleur is significantly tighter. Changing it a few times hurts my thumb now.
The second problem is that the handling is weirdly stiff and doesn't turn freely. If I turn it once it'll stay fine for a second or 2. As soon as I leave it and turn it again, I can feel a bit of resistance. While riding also, it feels stiff and needs extra effort to turn (before it was normal and loose. No hard work needed.)
I went back to the bike shop, and the guy told me nothing can be done about the shifter without spoiling the alignment. And he tried loosening and tightening the head screw. But that didn't help. I don't know what to do from here. I'm kind of an amateur in mechanical stuff like these. But I'm willing to do it myself.
The bike doesn't have any inside cable routing.