3d Widgets doesn't work properly (Bug?)

Hello.

I use 3d widgets in version 4.18 within my levels. With this you can interact with the right mouse button.

My problem is that the buttons get hovered, but if I click the button doesn’t work.

But this problem only occurs sometimes and can be solved if I reload the project completely… until it doesn’t work again, and so on.

Same project in 4.19 works, but i have to use 4.18.

how am I supposed to solve this?

Bump… I’ve spent days trying to solve the problem but it just doesn’t work.

could that really be a bug?