SRAM Hydraulic brake stuck (with a changed bite point) after landing/impact

I experienced a weird problem on my SRAM level t 2 piston brakes.

I like hopping my bike around, e.g. bunny hopping onto curbs. Sometimes, if the impact is hard, the brake lever would have reduced travel. It feels like the pistons would engage the rotor at half of the normal travel (as if the brake is stuck in the middle). At that moment, if I grab the brake hard, I hear a clicking noise (from around the lever), after which it would function normally with the normal travel — until I hit something hard again.

Never tried bleeding, but as the brake feels solid when engaged, I assume that bubble in the hydraulic line is not likely to be the cause. Any ideas on how to troubleshoot this?

Thanks! The problem is driving me crazy, and it is dangerous to descend with these brakes with changing bite points.

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Edit: I found the problem. If I bend the brake lever towards the opposite direction (e.g. away from the handlebar), the lever would be stuck at a different position, which can be corrected by a pull to the handlebar.

When I hop, my hand position would change slightly which bends the brake lever towards the wrong direction, which is the cause of the problem (instead of the vibration).

It is still kind of annoying as it is distracting when riding. But as least the problem is located.