DT4 - nested IMAP mail folders shown on top level

I created a 1-level deep hierarchy where nested IMAP mail folders are shown on top level in DT 4.0.1.

test1
\. test2

becomes

test2 is shown twice: nested and on toplevel. Is there anything I can do about that? With just one folder that’s not a problem, but with 10 subfolders it’s not that “helpful” and clutters the import dialog.

I checked on different accounts including Gmail. It’s all the same.

Where?

In Mail.app

DT

Mail.app

I have confirmed the behavior here. Development will have to investigate this.

Thanks!

The next maintenance release will fix this.