Repeating Timer does not fire events if no other event occurs

I was trying the Animation example

and it seems as the RepeatingTimer does only fire events when i hover the mouse over the window. When i stop the mouse at the window it stops firing the events.

Does someone has any idea on that ?

I am running vtk on a ubuntu 18.04.4 LTS with gcc 7.5.0

I have the same issue when upgrading to VTK9 from VTK8.1.2. I’m also running linux.

This looks like a bug, you may want to open an issue here :

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