[Bug] Only floating window would remain after deleting buffer

[levouh]

Filing for later, will likely poke at this myself.

After deleting a file in the tree (floating state), if the buffer deleted is the only other window open, we get an error noting the title of this issue.

[cseickel]

What should happen in this case? Would you replace the last window with a blank buffer?

[levouh]

Either an empty buffer or the "next" buffer in the current tabpage would work.