Sculpting and splines ,with world composition enabled not working on multiple tiles

Development World Creation
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1

Until few days back everything with the map just worked fine,but recently I can’t sculpt on two world composition tiles at the same time .In order to sculpt I have to make them as current level,but by doing so I can only sculpt on one tile at a time.
Here is a quick video about the above problem.

And also Landscape splines are not working when persistent level is made as current level.I can’t CTRL+CLICK on the tiles when persistent level is made as current level.
Here is a quick video

Can anybody please tell me how to fix this problem.

2

I just want to follow. I have tried world composition with 4.24, and new brush blueprints, but still haven’t found a way to save levels. Like you, the problem is the emplacement of those brushes, they have to be on a certain level but if so, it cannot be saved.
Hoping anybody else have more advices, I’ve asked at different places, you are the first person I see who tried world composition with 4.24