TYPO3.Flow

Currently when creating URIs/Links via the UriBuilder arguments that are not part of the configured route values are appended to the resulting URI as query string. This makes it difficult to get a reliable behavior.
Example:
Given following Routes.yaml

 1-
 2  uriPattern: 'foo/static'
 3  defaults:
 4    '@package':    'Acme.Demo'
 5    '@controller': 'Standard'
 6    '@action':     'index'
 7
 8-
 9  uriPattern: 'foo/{dynamic}'
10  defaults:
11    '@package':    'Acme.Demo'
12    '@controller': 'Standard'
13    '@action':     'index'

Now <f:uri.action action="index" arguments="{dynamic: 'bar'}" /> would result in the URI foo/static?dynamic=bar.
This could be solved by moving the second route above the first one, but than the matching wouldn't work as expected because the URI foo/static would match the dynamic route then.

We do need the feature of appended query strings for fallback routes and if you want to explicitly use them.
As a solution I'd suggest to append the exceeding arguments only when configured in the respective route:

1-
2  uriPattern: 'foo/{dynamic}'
3  defaults:
4    '@package':    'Acme.Demo'
5    '@controller': 'Standard'
6    '@action':     'index'
7  appendExceedingArguments: true