When unlocking Yubikey's TOTP account with tap to unlock the blurred background overlay doesn't go away on tap on v6.3.1 / v6.3.0

[jacobthompson101]

When unlocking Yubikey's TOTP account with tap to unlock the blurred background overlay doesn't go away on tap on v6.3.1 / v6.3.0

[dainnilsson]

When triggering the OTP generation from the app, does the YubiKey LED begin flashing? And does pressing the button then cause it to stop flashing? If the answer is yes to both, then it would seem that the YubiKey itself is behaving correctly, but something is preventing the app from completing the operation. If possible, please try the following:

1. Launch the app and insert the YubiKey.
2. From the navigation drawer, open "Help and about", and change the "Log level" to "Debug".
3. Close the "Help and about" dialog, and try to activate the credential.
4. Press the button when the YubiKey LED flashes. Even if you are unable to get the dialog to close by pressing the button, it should time out and close after a few seconds (15 or so). If it doesn't close on its own, you may have to physically remove the YubiKey, which should close it.
5. Re-open the "Help and about" dialog and press the "Copy log" button.
6. Paste the contents of the log as a reply here.

You may want to look over the log for any personal information that you may want to remove (it might contain the serial number of your YubiKey, the names of the credentials, etc.). If you prefer, you can also email me the log at dain AT yubico DOT com.

[dainnilsson]

Did you figure out what the problem was? I never received anything in my email, so if you sent anything it must have gotten lost somewhere.

[antoinedeschenes]

@jacobthompson101 Any issues when the key is connected before the app is started? (note: just opened #1388)

[dainnilsson]

I haven't been able to find anything in the log, and have not been able to reproduce this either, so far.

Question to both of you: Does the YubiKey LED start blinking when you're prompted for touch, and does it stop blinking when you touch the sensor? I'm trying to understand if that part works as it should, and when the problem actually occurs.

[antoinedeschenes]

I haven't been able to find anything in the log, and have not been able to reproduce this either, so far.

Question to both of you: Does the YubiKey LED start blinking when you're prompted for touch, and does it stop blinking when you touch the sensor? I'm trying to understand if that part works as it should, and when the problem actually occurs.

Yes, the key starts blinking with the prompt and stops when touched. I even see the blurred code coming up under the modal in the dev build, but there's simply no way to make the modal go away.

Note the modal disappears for a fraction of a second when touching the sensor, but reappears right after.

[jacobthompson101]

Hi @dainnilsson sorry about that delay, thanks for following up! I had captured the debug log based on your instructions before the Christmas holidays and then work got busy in the new year. I just ran through and removed the serial numbers and any personal information. Please see the attached debug log. I was able to reproduce the issue on December 21st 2023 when capturing the log. Hopefully the debug log is helpful :)
yubico_debuglog.txt

[jacobthompson101]

@jacobthompson101 Any issues when the key is connected before the app is started? (note: just opened #1388)

@antoinedeschenes I tried connecting the key before the app was started, and the same issue/bug appeared on two different keys in different USB ports, but it appears to only happened once so far on both keys, and then subsequent tries again to make it happen didn't cause the bug.

[jacobthompson101]

@dainnilsson I was able to get the bug a second time within 10 minutes on one of the keys, and yes I can confirm the LED on the Yubikey stopped blinking after I pressed it, but the Touch required screen didn't go away on this attempt. I should note that this USB port is a little bit looser than others I have worked with in the past, but the issue happened in a different USB port as well so it's not limited to just that USB port.