Question movement attribute permanently changed for player?

[ormesome]

While testing some new plugins (specifically the Spirits side plugin for ProjectKorra), one player used an ability on another which set the targets movement speed to 0. The plugin crashed, and the code to restore the movement speed was not run. This attribute change appears to be permanent, and it only affects the player in this server.

We can "fix" the problem by running

attribute SufferingPlayer minecraft:generic.movement_speed base set 0.1

at the console, however the attribute is reset to 0 when the player dies or reconnects.

To be clear, I have removed all plugins and datapacks from the server but the attribute is still set to 0 upon connection.

How do I restore the players base movement speed?

 

[electronicboy]

attributes are persistent, if the player dying or reconnecting sets it back to 0, you have something doing that somewhere (command blocks?)

 

[ormesome]

I want to reply and close this. Thank you for your patience.

Attributes settings are not persistent, but there is a file located in

world\playerdata\<uuid>.dat

for each player that persists data. Just find their UUID when they next connect.

The dat files are in a binary format called NBT (https://minecraft.fandom.com/wiki/Player.dat_format) and I used a web based editor (https://irath96.github.io/webNBT/) to reset the players base movement speed.

I have learned another niche piece of information today.