Looks good. I've noticed if I re-use a window, it doesn't clear the previous filter. For example, filter a tile with an item first, then do the same on a different tile and pick "Items 1" as the window.

It's similar if I've set a filter manually on a window, then chosen that window for a tile filter.

I suppose it should just clear the current filter, or is it able to do an OR? I guess not without nesting.

Looks good. I've noticed if I re-use a window, it doesn't clear the previous filter. For example, filter a tile with an item first, then do the same on a different tile and pick "Items 1" as the window.

It's similar if I've set a filter manually on a window, then chosen that window for a tile filter.

I suppose it should just clear the current filter, or is it able to do an OR? I guess not without nesting.

I did leave it as an add as I thought it would be useful to add to a query you were already building but I suppose in most cases a clear and set would actually be more useful, at least less wrong.

Yes nesting would need a bit more work but would be good to have at some point.

I'll change it to set.