Repro is to use a double or DateTime property on a part and use the default binders. The site's culture should be used but it's using the inveriant culture instead.
Model binders should use the thread's culture for POST data. Now it seems like we are not setting the thread's culture and we probably should, but this is too big a change for 1.4.
@bleroy created: https://orchard.codeplex.com/workitem/17348
Repro is to use a double or DateTime property on a part and use the default binders. The site's culture should be used but it's using the inveriant culture instead.