[LyX/master] Fixup 294e4884: center correctly Abstract label when paragraph is empty

[Jean-Marc Lasgouttes]

Le 09/02/2021 à 19:07, Scott Kostyshak a écrit :
> On Tue, Feb 09, 2021 at 12:11:02PM +0100, Jean-Marc Lasgouttes wrote:
>> Le 09/02/2021 à 03:57, Scott Kostyshak a écrit :
>>> I'm not sure if this commit is the cause of a change in behavior, but I
>>> think it's related. To reproduce, open the attached example file. The
>>> "1." from the enumerate is to the left of the "red nesting bars". A
>>> similar issue occurs if instead of enumerate "Remark" is used. I think
>>> the empty paragraph before the enumerate plays a role in what's going
>>> on. If the empty paragraph is removed, the text issue goes away.
>>
>> It is indeed due to the commit.
> 
> Thanks for confirming.
> 
>> The effect is very weird. I'll investigate,
>> but for now I have no idea of what is going wrong.
> 
> No problem. I think it's a somewhat rare bug so doesn't affect testing.
> Let me know if you want me to open a trac ticket for it.

Yes please. I have to fix it anyway.

JMarc