I have very small available width on my screen to draw DateTime Picker, the width is enough to show selected datetime. I also have space to open drop down properly, but it is not opening drop down fully.
See screenshot below. Month name and year is overlapped by arrows, also days are very close to each other.
The default time picker calendar will try to be a similar width to the input width. The easiest way to fix this would be to adjust the UI and stack the inputs. Could try some other tricks and playing around get around that, but not sure of a good way to fix it.
You could also try using the Plugin Air Date and Time Picker. I haven’t used it too much but I know others have liked using it