Annotate PDF - Comments can't be added and viewed in an RTL user interface

Pre-requisites Make sure that a document converter is installed and working on your site (i.e. Unoconv) Install a Right-to-Left(RTL) language pack e.g. Arabic ( https://docs.moodle.org/37/en/Language_packs ) Setup Create a course with a teacher enrolled in it with the "editing teacher" role and a student enrolled with the student role.  Test Original test from 65484 Log in as the teacher and create an assignment with online text submissions and "Annotate PDF" feedback enabled. From the "View all submissions" page for the assignment, edit the students submission to add at least 2 pages of text. As a teacher, grade the submission and add one of each of these annotations to the top of each submission page. Text comment Squiggly line Straight line Rectangle Circle Highlighter box Stamp Return to the "View all submissions" page for the assignment Click on the "View the Annotated PDF..." link for the submission. Visit each page of the annotated PDF and scroll the document down. On each page, verify none of the annotations are displayed outside of the scrollable region for the feedback document (see the screenshot image on this issue for an example of a fail). RTL test(contd from previous) As a teacher, grade the submission from the previous test Switch to the RTL language Confirm you can see the previously added annotations. Confirm you can add one of each of the annotations: Text comment - text entered should be right aligned and begin from the right Squiggly line Straight line Rectangle Circle Highlighter box Stamp Return to the "View all submissions" page for the assignment Click on the "View the Annotated PDF..." link for the submission. Visit each page of the annotated PDF and scroll the document down. On each page, verify none of the annotations are displayed outside of the scrollable region for the feedback document (see this for an example of a fail). Resize test Using both a RTL and a LTR language Resize the browser and confirm that the annotations location adjust for the change in viewport and remain in the original spot. Specifically test with horizontal scroll.