I agree with all of the above that you will get a bit of a clunk hen it's been sitting a little while, I think pretty much all cars are like that if they have been sitting a while and especially if the weather haas been a tad on the damp side. If it's happening a bit too frequently, how about changing your rear pads, I don't know how old your rear brakes are or in what condition, but that might help ease it a bit. (Although I'd probably go for the leave-in-gear solution too)
Jim
1992 NSX, 3.0 Manual, (Was Sebring Silver) Now Kaiser Silver
2018 Jaguar XE, 2.0 R-Sport 250, Loire Blue.
2013 Kawazaki ER6F, Metalic Green.