Is tingling in the fingers after carpal tunnel surgery normal?

Can be. Symptoms of carpal tunnel syndrome (cts) include numbness, tingling, weakness, pain, clumsiness, etc. Most if not all symptoms usually resolve after surgery. However, symptoms can persist or even worsen immediately after surgery, possibly due to the anesthetic and/or postoperative swelling. Any concern should immediately be addressed with the surgeon.
Depends. This is a common problem. It may improve with time.
No. No tingling is normal. It puts the original diagnosis of ct syndrome in question. You need repeat EMG and compare with one done before surgery.