I always wait some time, when I have to buy something new appeared on the market, a camera, a computer or a car. This because the first runs can always have some problems.
About the X-T3 that's my worry: being built in China it's not the same as being built in Japan.
By a hand they have been able to keep the price low because of this, but by other hand the risks of lack of QC are surely higher.
As your camera shows.
Hope you'll solve the issue quickly.