I think the primary function of this latch is to secure the door for travel. It should have a spring washer installed to provide enough tension so that the latch remains in the desired position. In normal use, the rubber magnet running the length of the door should be sufficient to keep the door closed.
Some prefer to use the latch while in the shower and forget or one attempts to pull the door open with the latch closed and those small parts are too fragile and are easily bent or broken.
Our latch was bent when we bought our trailer used and found the magnets under the bed! After reinstalling the magnets and securing them with a drop of sealant and repairing the latch, all has been fine for over 3 years. We use the latch only for travel.
Air Safe Hitch, Reese Dual Cam 800#, Centramatics