Closed Captions panel use fixed size

In Java Edition, Closed Captions panel automatically resize based on how long the subtitle text is, on Bedrock Edition however, Closed Captions panel always use fixed size, meaning no matter how long or short the subtitle is, it will be always use the same width (which is 30% of your screen).

Steps to reproduce:

1. Enable Closed Captions: Settings > Accessibility > Closed Captions

2. Give yourself a grass block and a spear

3. Place or breaks the grass block, then hold the spear and activate charge attack

4. Notice that the width of the Closed Captions panel does not change

Expected results:
Closed Captions panel automatically resized based on how long the subtitle text is.

Observed results:
Closed Captions panel always use fixed size.