problems with parameter choices that end in whitespace
If from an e.g. filter SP component in the frontend (browser), if you select a parameter that is a string that ends with a space(s?), the first time you move this component around in the editor, the parameter choice flips back to the default. If you select the parameter choice you choose the first time again, move the component on canvas again, your choice remains.
Also, I don't think such filters choices are working.