Created attachment 153408 [details]
screenshots and test database
Have tested the attached Firebird-Database with LO 220.127.116.11.
Date format, choosen in the properties of the date-field of the tablecontrol, should be DD/MM/JJJJ (15/08/2019). When changing from editmode to input data it changes to DD.MM.JJJJ (15.08.2019). This seems to be the same with all frontslashes. Instead of frontslashes you could see points.
My system: OpenSUSE 15 64bit rpm Linux.