In the 'TitleBar Button' section, I removed a titlebar and it worked. But when DF was restarted, the button returned. I guess I also need to remove it from the 'Functions' section?

On v11b2.

Update: the removed buttons keep coming back no matter how hard I try.

On b3 and it's still a problem. I guess this is still pending fix?

Still not fixed for me on 11b4. I can add/remove buttons for any function but for some reason, these two buttons will always return:
* Move Windows to Different Monitor (shows monitor selector)
* Maximize Window (ignore monitor splits)

So for example:
1. Go to settings > function.
2. For above functions, click 'remove titlebar button'
3. Close.
4. Go to settings > functions.
5. For above functions, titlebar icon is back for each.

But this issue doesn't happen for other random functions I've tested. Are these somehow 'default' titlebar buttons?

I'm not sure if it is the same issue but I can't permanently remove the "Move Windows to Next Monitor" button. I have a few other buttons, but that one constantly comes back, doesn't matter how many times I remove it. I am running Beta 4

Not sure if you are asking me for my log or the OP, but attached is mine. I cleared it, removed the button, closed Displayfusion, reopened it and button was back. Was around 4:52pm. Hopefully it helps.

In case it helps, here's my my log of:
1. Settings > Functions > click [Remove TitleBar Button] for:
* Move Windows to Different Monitor (shows monitor selector)
* Maximize Window (ignore monitor splits)
2. Close Settings.
3. Repeat 1 and 2 (Functions page shows that the button removal was not permanent).
4. Export log.

Just installed the new beta and can confirm that the issue is fixed. Thank you!