State keyframe will not be render correctly

• How to re-create:

• Set up an Animation with state keyframe (By state keyframe, it's a keyframe that exist at the end of an sequence but not the animation itself [Picture 1] for reference) 

• Load it to the game and use /playanimation.

• Watch the [Video 2] for references.

• Minecraft will not render the last keyframe till the end of the animation but rather assume that keyframe doesn't exist.

• Expected result:

• Minecraft should render the last keyframe as its final state untill the end of the animation.