I just installed one of these today. I did some experimenting before installing and determined that the unlatch lever is disconnected when locked so I removed the tab from the handle carrier that binds the handle when locked causing the handle carrier to self destruct.
The red arrow is the locking bar the blue is the tab that blocks the handle from lifting.
I cut off the tab and now the handle operates as it should: when locked out does nothing: "dry fires" so no longer puts undue stress on the carrier.
Blue arrow points to the missing tab.
Extremely important: the carrier I just installed put in had a spring that was too long and actually scraped the glass!
I cut off the end of the spring to resolve the problem.