Incorrect dates in April

What I did: I created a note and tried to assign the dates from March 30 to April 1 to it.

What happened: The assigned dates show up as March 30 to April 2. And if I try to extend the dates further into April, the day is always one more than it’s supposed to be. So 4/2 becomes 4/3 and so on. But it only happens when I have the starting date in March. If the dates are only in April, it works as expected.

Also, if I assign the dates by creating a Calendar event, it shows up correctly. But if I delete the Calendar event, the dates suddenly become incorrect again.
Not sure if this is supposed to be an April Fools’ joke or something.

What I expected: I expected the dates on the note to match what I picked.

Things that might be helpful to know (Agenda version, OS and model, etc):
Agenda 5.1
iOS 12.2
iPhone XS Max

No certainly not a joke, could you send us some screenshots of what you describe? Also, do these events have a different timezone than the system one?