I had the exact same experience with my Microlite 23lb. The thing that aggravated me was that I had looked at that stupid filter, thought "that's a stupid design, I am going to bypass it", and didn't do it.
First camping trip, BLAM, water everywhere. After puttong it back on I sat and watched it unscrew itself.
$105 later for a road repair guy, there is 6 inches of pex where it used to be and an external inline filter when I camp.
"I used to be disgusted, now I try to be amused."
2015 Sunseeker 3010ds