I can't say I've experienced to much of this problem, I have come across it now and then mainly on older trucks such as Lansing Bagnals FOER where tilt cylinders are located under the truck, when the mast is in the verticle and the cylinder push rod is at 90*
To the mast, then if the driver runs into a solid obstacle then the cylinder rear weld may crack, and valve blocks only had one relief valve set to lift load requirements.
I've seen plenty of forks with toes curled up even banana shape, the best one one was when some wise driver drove a sixteen ton lift into a rail embankment trying to lift a section of rail track the forks broke clean of at the heels leaving them embedded in the embankment, still that may be moving way from the current subject.
I've seen plenty of bottom carriage rollers smashed due to forks being run into solid objects, and I've seen plenty of tilt cylinder rod ends broken of on Yale trucks due to in my opinion rod end being pinned to mast with pin and no grease nipple done for cheapness I suppose this led to rod end seizing to the mast, then when tilt was applied the piston rod flexed and eventually after a time broke at the rod end thread portion, never ever saw a bulletin to modifye and fit grease nipple and pin to sort that problem.

Regards Titus