Visual Studio Code – Why does the C# extension for VS Code insert nothing and remove what I typed when accepting a suggestion for an override?

VS code shows me override suggestions, but when I try to use them by pressing Enter or tab, it just deletes the whole thing and leaves only the first letter:

I am working on a Unity project so maybe that might have something to do with it. This problem is not only with this specific class, but with a whole project. I have no idea what else to provide, as I’m new to intelisense and stuff I’m sorry if this is not enough info in the question… At least help me find the direction to go I’m lost.

Versions:

VS Code "C#" Extension version: v2.0.413
VS Code "C# Dev Kit" Extension version: v0.3.21

This class:

public class PlayerMovementState : PlayerState
    {
        public PlayerMovementState(IStateMachine stateMachine, PlayerEntity player) : base(stateMachine, player)
        {
        }
    }

Base class:

public abstract class PlayerState : BaseStateMachineState
    {
        //...

        #region Drawing

        //...

        #endregion
        #region Main Methods

        public virtual void Move() 
        {
            player.Rigidbody.velocity = Vector2.zero;
        }

        #endregion
        #region Callback Methods

        //...

        #endregion
        #region Damage

        //...

        #endregion
        #region Helper Methods

        //...

        #endregion
    }