Mentioned in #2763; likely also the source of identification of other PRs already created (ideally create & curate a list here).

Utilise the various sanitiser functionalities afforded by recent software structural changes, and address any potential issues on dev. A list of remaining outstanding issues could be posted here, potentially attracting suggestions / instructions from other devs even if they have not yet gone to the effort of setting up the sanitiser checks on their own local systems.