Hmm, something feels not quite right here:
Exact opposite in fact:
Yeah, probably I had to change to "Faux Baldur's Gate I style (use BG1 icons but not animations)" in 1pp-config-default.ini file and not leave default but I thought
APPLY SAME BG2 HELMET INVENTORY ICON SETTING TO Tutu/BG1 HELMETS
1 = No [default]
covers it. Maybe it wouldn't be bad idea to clarify it more clearly in future for similar dummies like me.