i have identical vertical cracks about 2" long on both driver and passenger doors...cracks are located right near the door-opener latch...these cracks are so identical the first time i saw them i thought the panels were manufactured that way! but the rest of my interior is so mint-condition it is like brand new inside. i have seen the exact same cracking on so many TJ's now that i am convinced it is just a poorly produced part.
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, dual tan tops, 2nd owner.
2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 24,000 miles.