basically i cant/very struggling to target the boss or mob with mouse mode (my cursor is actually very close to the boss its just recording visual desync)
edit: just found out that you have to left click a target first in order to start targeting it while you only need to hover your cursor to the target before arts patch, and its locked the target (which is same like keyboard mode but not available for mouse mode before), but the weird thing is sometime you can just hover like usual to target it
feels like this is more of a bug rather than intended, and its very annoying to cast a single target skills
i honestly think imc trying to gave mouse mode locking target system after last patch since we basically cant lock a target for quite a long time, but ended up bugged between locking target and hovering