List item block cannot be set to RTL

[abuyoyo]

Describe the bug
Unlike paragraph or header blocks, the list item block does not have a text alignment (or equivalent) option.
This makes editing extremely frustrating (nay - unusable TBH). Especially when dealing with mixed RTL / LTR texts - which is a common occurrence/use-case.

I've found an issues that might or might not be related to this (#138) but it's old and closed.

I'm using an LTR user-locale and editing an RTL post.

[annezazu]

@abuyoyo thanks for reporting this! I was able to replicate this with WordPress 5.5.1 without the Gutenberg plugin installed. Here's a video: https://cloudup.com/cQF-wPMvGNk I've added labels to help flag this for the appropriate people.

[kspilarski]

Same case for 3297558-zd, who needs RTL texts:

Paragraph block with text alignment option:

No text alignment option in the list block:

[shula]

Note that alignment and directionality are 2 different things, which give different results.

In this demo, both lines are right-aligned, but first has {direction: ltr;}, the second is {direction: rtl;}

• אאאאא בבבבב, RTL גגגגג דדדדד 123 !
• !גגגגגג דדדדד 123 אאאא בבבבב LTR

The direction completely changes the order of the sentence.

[jp-imagines]

Just spoke with a user who was looking for alignment or appropriate RTL settings on List blocks as well, and it looks like this hasn't been added yet. It's doable with some CSS, but that's very awkward – especially in situations where there's mixed RTL and LTR languages as mentioned in the original issue description.