Incorrect numbering in the ordered lists

[MaxTyulin]

In split view, the numbers for nested elements look like 1 -> 1.1 -> 1.1.1, but in wysiwyg mode, each new element starts with 1.

with markup

1. a
    1. a.a
        1. a.a.a
    1. a.b
1. b

expected

real