Collision outcome is different between PIE and Mobile Preview/Packaged Project.

When playing the user's project in editor vs Packaged, there has been different results for the enemies collision. When playing in PIE, you are able to fly through the enemies with no issues. When playing a package game, you are unable to pass through.

The user has attached a video to their post showing what is occurring for them.

The zip file of the users project is very large: [Link Removed]

1) Download the project zip file from the link provided in the description
2) Once downloaded, unzip the file into your Unreal Project location in Windows Explorer
3) After the folder is in the Unreal Projects location, open the project in 4.7.3
4) When the project opens, locate the 1EnemyRootClass BP in the content browser by searching for it.
5) Double click to open the Blueprint class
6) In the details panel, change the Damage to 0 (This is done to better see the error that is occurring)
7) Compile and save the Blueprint, then close the BP window
8) Save all and then PIE
9) Wait for the enemies to appear and then pass your ship through the enemy. (You should be able to pass right through with no issues)
10) exit PIE and package the project for Win-64 (Development)
11) Locate the package project in Windows explorer and double click to exe file to open.
12) When in game, wait for the ships to gather around you and attempt to pass through them. (You should not be able to pass through)