Embedded fill in the blanks is flickering in Firefox
mod_hvp version: 1.20. (2020020500)
Moodle version: 3.8.3
Question type: Fill in the blanks
Question type version: 1.12.4
Browser: Firefox 78.0.1 (does not occur in Chrome often, and is very mild when it does)
Steps to replicate:
- In Moodle create a new h5p activity and use 'Fill in the blanks'
- Create a large list of questions (with some blank text fields), around 20 lines. OR use the attached .h5p file to use my test activity
- Save and click 'embed' to copy the embed code
- Add a label resource in Moodle and paste the embed code into the HTML section of the editor. Save and return to course.
When loading the course page, the whole iframe flickers a lot (strobing effect) before finally loading the whole list at once. It generally occurs the first time and every second or third subsequent reload of the page (so keep refreshing until you see it).
The iframe loads all at once without unnecessary flickering.