I just discovered this and after inspecting mine, the rear ones on the back do show signs of past leakage. I might go talk to the dealer. I am curious if they Mojave has a different set than the Rubicon.
Did you ever figure this out? Mine does the same thing. It is not death wobble or vibration (this is my 9th Jeep)
I'm going to check my body mount bolts today but am running out of ideas as well.