Hi,
i ve seen that it s not for only my Spark. In the sport mode, i learnt that the gimbal switches to fpv mode. but i can not take cinematic footage. it tilts suddenly and hit the video when i turn right or left. how can we fix it? or is it possible to fix it?

This can help:
https://forum.dji.com/thread-174400-1-1.html

Change the RC stick-input from linear to expo.
In your case ALSO for Sport.
I did that, just to try,  and till now never fine tuned that, but:
It is changing the curve-FPV switching point from "touching the stick" to  "not carefully touched the stick".
Also reduce the Speed in Sport by 10 or 20%. (RC settings in the app)
That should get you no or just a little leaning angle.
But since cinematic is not a hairpin, but a nice radius curve, that could do the trick!

I will have to try that with litchi, methinks.
In missions, if I remember right, up to 36-40 kph, there is no leaning.

Edit: And for the high speed kick: speed up the footage by just 10 or 20%.
That mostly doesn't looks like timelapse!