Checkboxes do not fade in

[Psyolth]

Describe the bug
I've tested this and tried different combinations and settings but no matter what I cannot get the checkbox to fade in like other elements.

To Reproduce
Steps to reproduce the behavior (e.g.):

1. Go to any FancyMenu UI you can edit
2. Add a checkbox element
3. Enable Fade-in (it doesn't matter if it is "Only Once" or "Every time"
4. Test the Checkbox to see if it fades in or not

Expected behavior
The checkbox to fade in.

Reported behavior
The checkbox fails to fade in.