Move Open Tabs (Private -> Normal) fails

[Morikko]

Drag and Drop of private tabs into non-private groups doesn't work for me. I don't use the feature, but I thought I'd report it anyways.

Following setup:

Open a regular window with group A and a private window with private group B.
Open a website X in group B.
3a) Drag & Drop X onto the label "group A" while it is not expanded.
Then I get a new tab in group A instead of website X. Also, website X doesn't close in group B.
3b) Drag & Drop X into the expanded group A (e.g. below an existing tab in group A).
Then nothing happens at all.
3c) Right click on tab -> Move to group does the same as case 3a).

Reporter: @psisquared2

**** NOTE **** The contrary might be also not possible (to study)

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[Morikko]

Firefox is probably creating a strict border between private and not-private tabs.

I am not modifying it (on the move), and I am event not sure I can. Else, I could do a close/open, but all the pending data and history is lost.