Issues with water

I have been trying out UE5 and been getting along ok so far, however I now seem to have found an issue with the water plugin.

The water was working fine up until the last few times I openned the project at which points it has dissappeared and I am unable to get it working again, even by deleting and re implimenting it.

When I have the water in the level initially without terrain deformation there is no change, if however I enable it there is a brief flash where water can be seen, but then it disappears again and my landscape has been moved down by a significant amount.

When going down to the new level of the landscape I pass through a water PP volume so there is something there but not functioning properly, has anyone else com across this?

[video]Unreal Engine 5 water issue - YouTube [/video]