Missing checkbox to remember passwords on Mint-Y (gcr-prompter)

[BartyT2]

The gcr-prompter dialog has an option to remember passwords, but the checkbox isn't being rendered.
However, it IS navigateable with TAB, and can be toggled on/off as expected, it seems to be only visually missing.

Repro:

1. Create a new SSH key with password
2. Try to use the new SSH key to trigger the prompt
3. Press TAB to cycle between the inputfield, the invisible checkbox, and the two buttons.

System info: Linux Mint 22.3
Theme: Mint-Y Dark