Form layout when the "main" region has a smaller height than the "secondary" region is broken

I'm facing the same issue on a clean install of Drupal 10.1.1.

See the test evidence below:

I've created an MR that adds grid-row and grid-column attributes for the .layout-node-form elements.
Before the changes

After the changes

I applied the patch from the MR, and it worked as expected.

I can also confirm that with an RTL language, the form layout is correct too.

Attaching patch from the MR to use in composer.json

Thank you all for working on this! Asked one question on MR

I'm not sure why Tugboat env is not working on this issue.

I applied the latest changes on my sandbox, and it works as expected, including RTL language. See the evidence below:

lauriii → closed merge request !4406

Thanks for getting that addressed @gabriel.passarelli and for testing it @carolpettirossi! 😊

Committed 4511b7f and pushed to 11.x. Thanks! Also cherry-picked to 10.1.x as a non-disruptive bug fix.

Automatically closed - issue fixed for 2 weeks with no activity.