thunderbird not setup,has k9mail info

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

22

Where did you get the app from?

F-Droid

Android version

14

Device model

pixel 8 pro

Steps to reproduce

install k9 mail add accounts
install thunderbird check it

Expected behavior

separate data

Actual behavior

i installed k9 long long ago and have been using it with 4 accounts.
i installed thunderbird years ago and never set it up or
allowed it internet via firewall.
( i was planning to use it as a second mail app, but never got around to it)

i am upgrading my phone so i am checking all my apps to see what needs to be moved to my new phone
and was very surprised to see thunderbird has all my account info from k9 ( none of the mail however)
at some point since i installed thunderbird it got my k9 mail accounts.
all 4 accounts fro k9 are in thunderbird today.
i wish i could say when it happened.

i "think" i check thunderbird 6 months ago but never did anything other then open and close it. but it could be longer then that

Logs

No response

No source files, tests, logs, or entry points are named. Start by reproducing the setup with K-9 Mail and Thunderbird for Android on Android 14, then trace when the four existing K-9 account entries appear in Thunderbird; done means the apps keep separate account data without transferring the accounts.