Switch to Private Tabs bug after closing last regular tab

[Bytebitten]

When you close the last regular tab, you get the pop-up on the bottom that the tab is closed.
During the showing of this pop-up, it is not possible to switch to Private Tabs overview.
You will get back in the regular tabs overview.
Only until the pop-up is gone, you can switch to Private tabs overview.

App version; 2.11.1813.18
Android 9.0