Sort by date does not work

Sort by date does not work.

When I click on sort Displays date by ordering the connection is not correct.

See the image.

What CMS version are you using please?

Version 1.7.7
But the error also occurs in 1.7.4

Well I know it does work just fine in 1.7.8, although I think it did work in previous version as well, at least with the default date format Y-m-d H:i

Could you tell me what do you have on CMS settings → regional?
what date format?
Do you use international dates?

Sure. take a look.