I can somewhat repro this too
, I think
(in the Sandbox vault):
Numbered lists seems to ignore the blank empty line after the list if the line following the blank line starts with anything that could be parsed as a number list (i.e.: 01. or 01)).
Live Preview doesn’t show it but Reading does (as pointed out by ariehen in this post here).
Here’s a small screen-recording (LP is on the left and Reading on the right) where all I do is adding and removing a . after the 01 following the blank empty line…

The raw markdown I used to test this is simply:
1. One
2. Two
3. Three
01
02
03
Now, what bothers me with this is:
Live Preview doesn’t render the “merging” of the items with the list above
- Depending on the separator used between the list and
01., 01. will either be converted in Reading in a list or not 
Example 1: Using a --- (with or without blank line(s) around, it doesn’t seem to matter) as separator between the list and the next 01. converts 01. in Reading solely into a numbered list 
Markdown used:
1. One
2. Two
3. Three
---
01
02
03
Result: (LP on the left & Reading on the right): Same as with a simple blank line…

Example 2: Using a blank line and a markdown comment to separate the list and the following 01. doesn’t seem create a brand new numbered list
… while using only a markdown comment does
.
Raw markdown:
1. One
2. Two
3. Three
%% markdown comment separator %%
01
02
03
Result: 01. doesn’t get parsed as numbered list item neither in Reading nor in LP

But adding a space after 01. will render 01. as the 1st item of a numbered list in LP but not in Reading

In either cases (using a --- or %% comment %% as separator), something like 01.02.03 doesn’t seem to be interpreted as list item anymore
…but not a simple blank line 
I know markdown doesn’t support line breaks (soft or hard) but I also think a blank line after a list and before what follows (regardless of “what” is) should be enough to “stop” a list
…
… or at least, the rendering in LP and Reading could be more consistent maybe, so how lists works/should be written could be clearer (especially to those relying more on LP than Reading) 
This has been tested in the sandbox vault with Stricts line breaks toggled Off
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