Aegis: Can't press use biometrics after locking aegis (sometimes)

[elieobeid7]

Info

• __Version__: 1.4.2 (latest stable version, I'm not a beta user)
• __Source__: Google Play store
• __Vault encrypted__: Yes (with biometric unlock, yes fingerprint enabled)
• __Device__: Google pixel 4a
• __Android version__ 11, my device has the latest official updates, no custom ROM, not rooted

Steps to reproduce

Login to Aegis vault, then press on the 3 dots on the top right and press lock, then press on "use biometrics".

The finger scanner popup won't show sometimes, if it does show then press cancel, type a wrong password, then press "use biometrics" multiple times, at one point it will just not show anything. Press "use biometrics" many consecutive times fast, it will stop working,

This issue also occurs on the initial login screen.

[alexbakker]

I can only reproduce this by rapidly tapping the "use biometrics" button. With normal usage, following your reproduction steps, the prompt always shows for me.

I have a similar strange issue on my Pixel 5, where the biometrics dialog won't show up if I open Aegis quickly after unlocking my device using biometrics. I can also reproduce that with other apps though, so I'm wondering whether there's something going on under the hood here, either in Android or androidx.biometrics.

Let's wait for a new release of the latter so see if that improves things in any way.

[alexbakker]

If you don't mind getting your hands dirty, you can also try to update androidx.biometrics to 1.2.0-alpha01 in Aegis and report if that fixes the issue you're seeing.

[elieobeid7]

Sure. will do so this upcoming week and report back the result.

[alexbakker]

This appears to be a known issue: https://issuetracker.google.com/issues/174302354.