"After deleting or moving a message" setting not respected

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

17.0b3

Where did you get the app from?

Other

Android version

LineageOS, 22.2-20260211-NIGHTLY-FP3

Device model

Fairphone 3

Steps to reproduce

Delete or archive messages.

Expected behavior

Next message shown (if that setting is selected)

Actual behavior

The app seems to glitch (maybe ~50% of the time) and return to the message list.
It doesn't feel like it is simply not listening to the setting, it seems like it is glitching someway. See screen-recording.

https://github.com/user-attachments/assets/321b0b2c-7bb4-46ba-8860-f967cdf3282b

I think I've seen this behavior for the last ~2 months, in various stable and beta versions (16/17).

Other potentially useful things

• I mainly use an outlook.com account.
• I have multiple accounts.
• I have a high local folder size (5000)

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Very happy to help if there's any way I can.

Logs

k9mail-logs2.txt

Side-note - the logs have a default filename of "k9mail-logs". Is this intended?

No source files or tests are named. Start by reproducing delete and archive actions on the reported Android setup, then review the attached screen recording and k9mail logs alongside the handling of the “After deleting or moving a message” preference. Done means the selected next-message behavior works consistently after both actions.