Bug when applying effect/transition

Hello,

I recently download davinci resolve 17 (stable) when I try to use a transition or an effect, my media flick in black in the timeline and the effect/transition is not working.

It seems like a bug and I want to know if somebody has the same problem and if nobody knows the solution to resolve that.

Here you have a video to explain you more precisely:
https://photos.app.goo.gl/nqDcPWzXVKMo1hNC7

Thanks a lot

That's definitely not normal.

Give this a good read. It goes over the information we need from you in order to help.

viewtopic.php?f=21&t=90190