Yalms and invert mouse control

I posted this elsewhere looking for help, but it qualifies as a bug so I'll post it here, too.

I spent my whole game-life savings on a Yalm this weekend, and was shocked to discover that that up and down are reversed for me - ie the critical "invert mouse" option doesn't work when you're in a Yalm.

I've used invert mouse control in this and every other game I've ever played since the mouse was invented. Having to make the awkward control transition every time I equip and unequip the Yalm is totally confusing and may, in time, break my brain. It's taken much of the joy out of having the Yalm.

I can't believe this would take much effort to fix, so please do so. In fact, I can't imagine why it hasn't already been addressed.

I replied to the other thread, but I'll do whatever it takes to bring this to FC's attention.

Please fix this BUG!