Painting textures DOES NOT WORK in ANY circumstance

It used to work with my engine. And then I imported a landscape and it broke. I tried restarting the engine, creating new projects, deleting the textures and recreating the material, recreating and renaming the layer infos. Everything, I’ve tried it all. The engine is now completely borked.

How come there are so many bugs with UE5? I’m trying to learn it and man - i spend more time debugging than learning the features.

First, a lot of people are developing games in this engine, so clearly, it’s possible.

Second, randomly trying things might be a good way to learn how things are put together, but only if you actually analyze what’s really happening. Just randomly tweaking things “until they work” won’t work in a complex technical product of any kind, Unreal or anything else.

Start from the beginning: What does a landscape need? Walk through your landscape, and see whether it has each of those things.
You might even want to start another level from scratch, create a new landscape, and import/set up your scene again, to verify that your understanding of how things work, is correct.
If it works in the second level, then you can start comparing the state of that landscape, with the state of the landscape that doesn’t work the way you expect.