Birthdays from Tuta Mail Contacts do not show in Tuta Calendar

[GlytchMeister]

• This is not a feature request (existing functionality does not work, not missing functionality).
  I will request features on forum or via support.
• I've searched and did not find a similar issue. (I tried searching "birthday" and "import," but maybe this is a broader error that I don't know how to search for?)

Bug in mobile app

Describe the bug
Birthdays in contacts do not display in calendar app except when searched for, and the search results display a weird backwards all-day duration FROM the day before the birthday TO two days before the birthday.

To Reproduce
Steps to reproduce the behavior:

1. Have both apps, import contacts from GOS Contacts app to Tuta Mail during initial setup
2. Open Tuta Calendar, see no birthdays
3. Search for a contact with a birthday, see weird duration

Expected behavior
Birthdays should show in the calendar view, and duration of imported birthdays should be All Day from 00:00 or 12:00AM the day OF the birthday to 23:59 or 11:59PM the day OF the birthday.

Screenshots

(Birthdays are sensitive information, and I'm not sure if making a new dummy contact with a fake birthday after initial Tuta Mail setup is an applicable example)

Smartphone (please complete the following information):

• Device: Pixel 8
• OS: Graphene OS (Android 15)
• Version 2024121200

[GabrielDTB]

I have the same issue. I also use GrapheneOS and imported my contacts into Tuta. Adding a new contact and editing an existing contact's birthday shows the same behavior, too.

[thetrashcanhero]

Same thing here. Using GrapheneOS on a Pixel 9 Pro. Some contacts birthdays show up when searched for with the weird backwards duration and some don't show up at all.