-It should work. I checked myself It works.

Debug:

-Check for any white space before or after the date and remove it.

Hi Joaquim Verde

This same happened for me resolved by providing the format as below,

Hope this helps, is yes please accept the answer.

Thanks.

Hi Joaquim, I think you have a validation for StartTime preventing you to write hours on this form. This might have caused the problem. Can you show the validation in your microflow?

Hi,

thanks everyone for your help.

I do not have a validation in place. That validation message is mendix default in that widget, when you don't respect the desired input format.

There is a workaround (besides using the Custom format). If you also have date input, it will define a time by default which you can alter. But if you do not have a date input, and only want to input Time, there seems to be some sort of whitespace special character that I do not seem to reproduce with my keyboard.

I opened up a ticket with mendix, they have confirmed the issue and sent it to R&D. Still waiting for feedback on them. 

Once I hear more I'll let you know.