TAdvDBDateTimePicker not the same after Delphi 10.2 -> 11.3 update

VCL TMS VCL UI Pack
1

It's a bit of a weird problem here.
I updated my Delphi from 10.2 to 11.3.
Installed the newest TMS components - VCL UI Pack is on 13.0.0.4.
I have several TAdvDBDateTimePicker connected to a UniDAC Dataset which is set to autoedit.
Some of the dates are set by default, some are null dates.
If I open the picker with a none empty date and chose a separate date, the dataset goes into edit mode.
If I do the same with an empty date, I have to do this twice because the first dropdown and click won't do anything.
NulldateFormat is set to "----------" like on Delphi 10.2.
But setting it to " " won't help either.
I tried forcing the dataset into edit mode onDropDown, but that let to "You must be in ShowCheckbox to set to this date".
Which I find not surprising, because it seems, that picker component still thinks it has an empty date/time. So this actually would be the expected behavior when setting a null date without having ShowCheckbox set. Which I don't have and don't want to.

Do you have any ideas what could be the problem?

If not, can I change the display format of TPlannerDBDatePicker to "DDDD, DD.MM.YYYY" like DateFormat=dtLong does in the TAdvDBDateTimePicker?
Although this would be my less favourite choice, because I would have to change quite some components in this project alone.

2

I do not have unidac installer here. I retested this here with an ADOTable and null date fields. I set NulldateFormat to ' ' but I could not reproduce an issue. When I do dropdown of the calendar and just pick a new date and perform post on the dataset, this changed date is picked.
Have you checked with a TClientDataSet or ADO table for example to check if this issue is really related to unidac? If this problem can also be reproduced with a standard TClientDataSet or ADO table, please send a source project with which we can reproduce this here.

3

I tried with a FDConnection, FDQuery and TDatasource now.
Nope, not working.
I have never used ClientDataset or ADO and even FireDAC s.cks compared to uniDAC.

Since I have no time to spend on this issue:
can I change the display format of TPlannerDBDatePicker to "DDDD, DD.MM.YYYY" like DateFormat=dtLong does in the TAdvDBDateTimePicker?

I tried TDBDateTimeEditEh (EhLib) also and it worked, but sadly does not support dtLong in any form either.

4

If you set FormatSettings.ShortDateFormat to DDDD, DD.MM.YYYY, TPlannerDBDatePicker will format the date this way.

5

Thank you for your suggestion, but this is a far too global solution, because it interferes with other parts of my application.