When I was first in Taiwan, I didn’t have a license for years. Just the international one which I renewed and the Kaohsiung cops never gave me a hassle. But things were more chill in Taiwan then in terms of law enforcement. I wouldn’t do that today. It was the fun era of paperless scooters and I rode an old smoke belching 100cc two stroke. Scooters parked illegally everywhere, the Kaohsiung ‘left turn’, red light turns on red. All things they put a stop to today.
I was able to transfer my overseas license 5 years later so I finally went legit and don’t need to worry about any accidents.