Known Web Bugs- Please read before creating a new thread

Please see the following list of web bugs that we are aware of and refrain from creating a duplicate thread. This list will be updated as and when we have more information.

Bug Link to forum thread Status
Old versions of an edited item still appear in the course (phantom entries) [Userscript] Attempt to Eliminate Phantom Entries Aware (internal code QA-617)
Learn New Words throws an error due to Grammar not being available on web / Complete courses on mobile show as incomplete on web Grammar sections show up as not done even after completing on mobile Aware (internal code WEBSITE-975)
Speed Review throws an error on image-based courses Speed Review on picture course: Could not load the session. Whoops Aware (internal code QA-657)
Learn New Words throws an error (user-generated course) due to blank columns in edit mode Learn New Words: Could not load the session Aware (internal code PLAT-3184)
Facebook friends not loading Connecting Facebook to view friends Aware (internal code WEBSITE-2475)

If you have any further information or questions on any of the bugs above, please comment in the relevant thread.