[1.Description]: [RTL][Arieskk_v2.5][Flamekk_v2.5][Settings]Set your phone language to Arabic, then enter feedback view, tap input box to invoke cursor, you can find cursor is left-aligned. See attachment:Screenshot_cursor.png [2.Testing Steps]: Precodition: Set your phone language to Arabic. 1. Launch Settings app. 2. Select "Improve Firefox OS ". 3. Tap "Send Mozilla Feedback". 4. Tap one of the face icon. 5. Tap the edit box. 6. Observe the view. [3.Expected Result]: 6. The cursor should be right-aligned in input box. [4.Actual Result]: 6. The cursor is left-aligned in the box. [5.Reproduction build]: Device: AriesKK_2.5 [Affected] Build ID 20151026223015 Gaia Revision b564b21e08ffc3e4962f08850843c7482932ee7b Gaia Date 2015-10-26 14:22:21 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/6c7c983bce46a460c2766fbdd73283f6d2b03a69 Gecko Version 44.0a1 Device Name aries Firmware(Release) 4.4.2 Firmware(Incremental) eng.worker.20151026.214940 Firmware Date Mon Oct 26 21:49:48 UTC 2015 Bootloader s1 Device: FlameKK_v2.5[Affected] Build ID 20151026030217 Gaia Revision a677ddd3aa3a81058775938bd56008d96dbc78b0 Gaia Date 2015-10-26 04:48:31 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/5ca03a00d26823ce91ee0eaa2937bed605bd53c1 Gecko Version 44.0a1 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20151026.070911 Firmware Date Mon Oct 26 07:09:23 EDT 2015 Firmware Version v18D v4 Bootloader L1TC000118D0 [6.Reproduction Frequency]: Always Recurrence,5/5 [7.TCID]: 15777

Triage: Spec indicatesd multi-line input should be right aligned by default in RTL, though paragraphs within a multi-line input should take their natural alignment based on the content's direction.