fusion monitors

In fusion, when I open the node editor and place the original media in Monitor 1, it looks fine.

But as soon as I start adding nodes, the video turns much darker and more contrasty making it hard to view (see attachment).

Does anyone else experience this? Is there a simple fix?

Any help would be much appreciated. Thanks,
Andrew

If you manually scroll the timeline, does it stay dark, or it flashes?

Thanks Walter:
It remains the same when scrolling manually.

In playing with this, it looks like it might relate to fusion LUT settings: licking on the lut button seems to toggle on and off the weird appearance

I tried selecting different Fusion LUTs in the respective monitors in Fusion, they don't seem to behave in a predictable way. Also tried turning on the LUT's in the Fusion Settings...but again the behavior doesn't match the setting.

Andrew