bug#52771: 29.0.50; org-fill-paragraph does not work for several plain lists

[Kyle Meyer]

Rudolf Adamkovič writes:

> Reproduction steps:
>
> 1. start "emacs -Q"
> 2. type "C-x C-f" and "test.org" and RET
> 3. type the following:
>    
> - one
>  two
>
> - three
>  four
>
> 4. mark all with "C-x h"
> 5. type "M-q" to fill
>
> Actual:
>
> - one
>  two
>
> - three four
>
> Expected:
>
> - one two
>
> - three four

I can trigger the same behavior on my end.  I haven't stepped through
any code or searched the mailing list for related discussion, but it
looks like a bug to me.

(Unlike the initial post, this message should be forwarded to Org's
mailing list, and I've marked it as a confirmed bug for Org's
<https://updates.orgmode.org/>.)