Pulling a private container tab off the tab bar closes the tab

[Ketrel]

What happened?

If I pull a tab off the tab bar to separate it into a new window....

Normal tab: works fine
Container tab: works fine
Private Container tab: after about half a second the tab closes itself

Reproducible?

• [x] I have checked that this issue cannot be reproduced on Mozilla Firefox.

Version

6.6.1

What platform are you seeing the problem on?

Linux

[Ketrel]

Still occurring in 6.6.2

[Ketrel]

Still occurring in 6.6.3

[nek0d3r]

I experience this as well. In a related issue as well, if I open a private tab, then open a separate window, closing that window closes the private tab.

[Ketrel]

Still occurring in 6.6.5