Make an option to not display thousand separator in web client on a numeric field type.
In the windows client there was a registry key we could add that would hide the thousand separator on numeric fields. User's who want a numeric field so that numeric sorting is possible do not want to see the thousand separator on an index such as an invoice number.
The same idea existed in the German forum under http://docuware.uservoice.com/forums/230575-client-deutsch/suggestions/5387890-numerische-felder-im-webclient-auch-ohne-formatier
There is a workaround available to use a text field instead and apply a field mask which just allown numbers. The only missing fuctionality is seaching from…to… but the sorting should work just fine.