This is a follow-up on bug 1589352, to fix the third issue mentioned here:
https://phabricator.services.mozilla.com/D49828#1512253
... and also to make the pref on the .deleted row LTR.

Pushed by gijskruitbosch@gmail.com:
https://hg.mozilla.org/integration/autoland/rev/8ae63cee3ee1
Always display preference values on the search bar in the left-to-right direction. r=Itiel

https://hg.mozilla.org/mozilla-central/rev/8ae63cee3ee1

Comment on attachment 9102762 [details]
Bug 1589899 - Always display preference values on the search bar in the left-to-right direction. r=paolo

Beta/Release Uplift Approval Request

• User impact if declined: While typing preference names in right-to-left mode, the last dot would appear at the opposite side of the input box.
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: Yes
• If yes, steps to reproduce: This requires a version of Firefox in a right-to-left language. Check that, while typing a preference name containing a dot, the last dot appears correctly.
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): This fix was developed on a right-to-left build and reviewed on a left-to-right build, so it would probably turn out to be correct at the time of verification.
• String changes made/needed: None

Comment on attachment 9102762 [details]
Bug 1589899 - Always display preference values on the search bar in the left-to-right direction. r=paolo

Low risk css fix for ltr builds, uplift approved for 71 beta 6, thanks.

https://hg.mozilla.org/releases/mozilla-beta/rev/9a6ed73c61c3

Reproduced this issue on Windows 10, MacOS 10.14 and Ubuntu 18.04 using Firefox Beta 70.0b5 (20191028110005)
Also verified it using Firefox Beta 70.0b6 (20191031113544) and it has been fixed.