Using online version of Quest (well actually ActiveLit) not the downloaded version.
The first issue appears to be related to a combination of browser/add-ons/styles etc as thankfully not replicated on students games.
The issue with containers was on a student game where again none of the objects was appearing when she opened the container. Infuriatingly not replicated on a number of other students' games but nothing wrong with code either hidden or seen

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Appreciate the help and support with the variables issues as cannot seem to get them to work on the online game version. Is it best to send you a screenshot?