As identified by Barbara - when using a RTL language the responsive rules for forms are not working correctly.
MDL-39682 fixed the issue for larger screens.
Steps to reproduce:
- Use a screen of 360 width or 468 (or try lots of resolutions)
- Got to course settings or forum settings
- The labels are aligned on the same line as the input elements creating a mess
It should behave the same as LTR, see screenshots: