AddRequestParameterGatewayFilterFactory Invalid URI query, can not deal with encoded path segment

[scuhzq]

1 why RemoveRequestParameterGatewayFilterFactory】use build()

URI newUri = UriComponentsBuilder.fromUri(request.getURI())
		.replaceQueryParams(unmodifiableMultiValueMap(queryParams)).build().toUri();

but AddRequestParameterGatewayFilterFactory use build(true)

URI newUri = UriComponentsBuilder.fromUri(uri).replaceQuery(query.toString()).build(true).toUri();

2 why this issues closed silently?
#1742