Wither replays spawn animation after crossing the entity render distance boundary

Description:

After the Wither moves out of its entity render distance (approximately 65 blocks on Bedrock), it is no longer visible. When I move back to about 64 blocks, causing it to render again, the Wither briefly replays its initial spawning/charging animation.

This is only a visual issue. The Wither's health, AI, and actual state do not reset it continues behaving normally. The spawning animation simply plays again every time the Wither is rendered after disappearing due to the entity render distance. Bedrock's entity render distance is separate from Render Distance and Simulation Distance, so this occurs even with high world settings.

Steps to Reproduce:

1. Spawn a Wither and wait for its spawning animation to finish.

2. Move about 64 blocks away until the Wither is no longer rendered.

3. Move back to around 63 blocks, where the Wither becomes visible again.

4. Observe that the Wither briefly plays its spawning animation again.

Expected Result:
The Wither should reappear in its current state without replaying its spawning animation.

Actual Result:
The Wither visually replays its spawning animation every time it re-enters the entity render distance, despite already being fully spawned.