[PM-36855] Unable to change "Require master password on app restart" after "Unlock with PIN" has been set

### Steps To Reproduce

1. Go to 'Settings' --> 'Account Security'
2. If an Unlock-PIN is already set, then there are no other "Steps to Reproduce"... If an Unlock-PIN is not set yet, let's continue doing this:
3. Enable "Unlock with PIN code"
4. Enter a PIN and "submit" it
5. In the next dialog, you get asked "Require master password on app restart?"
6. Either choose "No" or "Yes".

### Expected Result

I should be able to change the "Require master password on browser restart" setting **after** "Unlock with PIN" has been set.

### Actual Result

I'm not able to change the "Require master password on browser restart" setting **after** "Unlock with PIN" has been set.

To change that setting, you I must disable "Unlock with PIN" and then enable it again.

### Screenshots or Videos

 

 

### Additional Context

This was already acknowledged as a bug for the desktop app and the browser extension - here the corresponding issues:

- Desktop app: https://github.com/bitwarden/clients/issues/18281
- Browser extension: https://github.com/bitwarden/clients/issues/18257

The **browser extension** does show that additional option after you set up "Unlock with PIN"...

 

... but I just checked the behaviour (with extension version 2026.3.0) and it is still the same issue/bug as discussed in https://github.com/bitwarden/clients/issues/18257 - you can disable "Require master password..." afterwards, but you can't enable it afterwards.

As the Android app has the same issue, as I just realized, I thought I report it too so that it can be tracked down here as well. - BTW, please check the iOS app for this behaviour as well.

### Build Version

2026.4.0 (21434)

### What server are you connecting to?

EU

### Self-host Server Version

_No response_

### Environment Details

© Bitwarden Inc. 2015-2026

Version: 2026.4.0 (21434)
📱 Fairphone FP5 🤖 15@35 📦 prod
🧱 commit: bitwarden/android/release/2026.4-rc50@61955d7cbe1546a4c467284b4a5491d4f0e47afa
💻 build source: bitwarden/android/actions/runs/23952219208/attempts/1
🦀 SDK: 2.0.0-5676-14521973
🌩 Server: 2026.4.1 @ EU

### Issue Tracking Info

- [x] I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.