I noticed that my app built using XCode 10.0 doubled in size. Diggging into the app itself (in Finder), I noticed the culprit is the file assets.car, which is Apple's way of storing the asset catalog. Specifically:
Compiled in XCode 9.4.1, assets.car is 25.3 MB
Compiled in XCode 10.0, assets.car is 52.6 MB
That is more than double the size of before. I didn't notice the difference until it was already live in the App Store. Now my users are donwloading the update which is double in size...
Anyone know anything about this? Bug?