My pi 3b+ stared getting hot when I put it in the case (53degC). Nothing to worry about but I decided to add the fan and a heatsink now it runs at 38degC.
Sliced with cura and printed twice and both times got a funny hash pattern in the top between the headphone and hdmi ports. Weird. May have been introduced by me when I modded the case slightly in Fusion 360.