While in a battle and playing the game in controller mode on the PC client, the cursor will move around the screen as if you were in a menu. This leads to important battle buttons being hit (like QTEs) when you do not mean to, and as such causes a great annoyance.
Additionally, you cannot change the cursor size as it is stuck at the largest setting regardless of what you select. Others reported these issues in both #📨・tech-support and #📨・meta-help. Hopefully the matter gets resolved quickly.