Fusion viewer blurred while applying edits

From time to time, all of a sudden changes on a Fusion Composition in the Fusion page, like moving a mask, cause the viewer to blur until the mouse is released. This is very annoying.
This seems to be a bug, as it happens from one moment to the other without changing anything. The issue is that once this effect happens, it will never go away even closing and reopening Resolve.

Has anyone seen this or is there any workaround I can try?

Thanks

Resolve version 17.1.1 build 9

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Thank you!

Can't find this command anymore in Resolve 18.

Can't find this command anymore in Resolve 18.

it's still here