Anyone else that have these problems with Construct 3?

I made a Game in Construct 3 but it have some errors that I don't know why they are there. Sometimes you fall out off the screen the player does not interacte with the platforms or even with other solid objects or something that should kill the player! But this happens randomly, sometimes it works the player don't fall out off the screen everything works fine but after some time it comes again! And I don't know what is wrong. Is this even a main problem in construct 3? Have anyone else these problems?

With game development, you have to tell your game everything you need it to do.

If the player is falling out of the level, then you need to program your floors to be "solid".

Or, you could put an event for your player such as "is outside of layout?" then position your player back into the layout.

The more events you add, the more your project will work correctly!

All my floors are solid. Why does it sometimes work and sometimes not? Ok that what you write will solve the main problem but it does not explain why this is actually happend. It not explained why the player sometimes ignore the solid objects and fall through them. It feels like that the player is changing the layer. It is strange that this problem only comes after you play the game for a while. It comes randomly.

Also, forcing objects into solids can cause problems. In my experience, glitching through solids, while annoying, is almost always a result of you telling an object that it should be in a position where a solid object is residing, and the solid object trying to tell the other object that it shouldn't be there. If it is not that, then it is edge cases where the object is moving so fast that by the time the collision event is registered, the object is already inside the solid. You have to design these edge cases out.