The bug

The new narrator feature reads the §-based formatting codes generated by the scoreboard (see MC-112693).

To reproduce:

1. Leave your current scoreboard team, and create a new empty one (needed to ensure that residual naming properties are not left).
2. Enable narrator.
3. Paste a copypasta; it will be read with your name as normal.
4. Set a color onto the team; the specific one doesn't matter (it can even be reset, and the bug will still happen). Numeric colors such as blue work best.
5. Paste the copypasta. Your name will be read with surrounding color codes, for instance, "9 pokechu r".

As a series of chat messages/commands:

/scoreboard teams leave @p
/scoreboard teams add test_team
/scoreboard teams join test_team @p
Did you ever hear the tragedy of Darth Markus the wise? I thought not. It's not a story Microsoft would tell you. It's a Mojang legend. Darth Markus was a Minecraft developer of Mojang, so powerful and so wise he could use Java to influence the entity data to create life.
/scoreboard teams option test_team color blue
Did you ever hear the tragedy of Darth Markus the wise? I thought not. It's not a story Microsoft would tell you. It's a Mojang legend. Darth Markus was a Minecraft developer of Mojang, so powerful and so wise he could use Java to influence the entity data to create life.

Cause

Probably, narrator is implemented using the component's raw text (mcp calls it getUnformattedText. However, due to MC-112693, format codes can still be put into that text, meaning that narrator would receive a string starting with "<§9pokechu22§r>", and diligently read that.

Possible fixes

The ideal fix for this issue would be to fix MC-112693. Alternatively, the narrator library could strip out §-based color codes, as it already does with < and >.

Demos

Here's what it's like without a team color:

WithoutColor.mp3

... and with a team color:

WithColor.mp3