I changed my keybinds, with the Basic Skill Slot being bound to Mouse 4. However, when using Hold Position (Shift) + LMB, it still uses the skill that is in the Basic Skill Slot, even though my LMB is only bound to Move/Interact.
This makes gameplay quite frustrating, to say the least and leads to unintended use of the skill in the Basic Skill Slot, when trying to move while still holding Shift, which it shouldn’t.
I have something similar.
Basic skill: LMB; Core skill: RMB; Move: MMB; Interact: M5 and M4
Now here’s the funny thing. On my main character (sourcerer) where I initially set that config, it works perfectly. LMB just does attacks, MMB just movement and M4/M5 just interactions.
On a new side character (barbarian), I can walk with MMB and interact with M4 and M5, but LMB, also moves my character if not pointed at an enemy. Resetting config doesn’t work. Switching back to my main character, it works fine again.