created object disappears when creating another one

The situation I want: create an object every 2 seconds. The objects should not disappear unless a future action tells them so.

[code:8ahl8y1r]every 2 seconds: call function "create object".[/code:8ahl8y1r]
Whenever the object is created, I see it being removed from the screen as soon as the new object is being created.

What can be the reason for this?

I'm using C0.99.84.

Might run the debugger. It should tell you how many instances exist.
If many objects exist, then they are either invisible, off screen, or behind something.
Other wise you will have an event doing something you didn't remember, as there is no bug that does anything like this.

Thanks for the reply, I will try your suggestion out.

edit: it was another (messy) event that caused it.