Adding fields to a union in the type editor puts them at offsets

[CouleeApps]

Version and Platform (required):

• Binary Ninja Version: 5.1.7982
• Edition: Ultimate
• OS: Windows
• OS Version: 11
• CPU Architecture: x64

Bug Description:
When I make a Union type in the type editor, trying to click the last line and press Y to create a new member puts the member at the offset of the size of the union, rather than at 0 (where i would expect a union member to go)

Steps To Reproduce:

1. Open any binary
2. Open types
3. Create a new union
4. In the union press 4 and 8 and Y etc to create members
5. Notice they add a bunch of padding instead of going at 0

Expected Behavior:
I expected unions specifically to put new members at offset 0

Screenshots/Video Recording: