%player% variable in Messages.toml doesn't get properly applied to discordChatMessage

[GoldenAppleGuy]

In Messages.toml, the following block can be seen:

# PLACEHOLDERS:
# %player% - The player's name
# %msg% - The chat message
discordChatMessage = "%player%: %msg%"

However, when the messages are sent to the Discord channel, it displays the linked %user% string instead of the %player% string. The mismatch can be clearly seen in this screenshot, and its corresponding block in Messages.toml.

# PLACEHOLDERS:
# %player% - The player's name
# %advName% - The advancement name
# %advDesc% - The advancement description
# %advNameURL% - The advancement name in an URL-Encoded form
# %advDescURL% - The advancement description in an URL-Encoded form
advancementMessage = "%player% just made the advancement **%advName%**\n_%advDesc%_"