There’ll never be a patch for anything.
First of all epic doesn’t give a ■■■■ (about anything except lining their pockets and faking interest with mega grants).
Second of all, they have been claiming that world composition is to be discontinued for over a year, so even in the remove eventuality that someone at epic may care, the eggheads above will tell them not to do anything.
As far as the issue.
It’s probably related to your custom project and not to something the engine is doing.
There’s a billion ways that a reference could be stuck and cause a null.
Try a clean build on Android. Delete everything related to the project (usually just a dmg unistall) and re-attempt to publish.
The reason that world comp and any mobile don’t go well together is the amount of memory needed for map load - not the fact they cannot.
You are device bound to smaller tile sizes to get things to work. And your LODs have to be even more aggressive than usual to allow for decent performance.
In 99.9% of cases you are also better off not using landscapes at all - on mobile or on anything else (bake levels from world comp, delete the landscape levels. Re-create using only the impostor meshes).