Hey y'all,
Yesterday (Monday, 7th) Alex Monk submitted and subsequently back-ported and deployed a fix for an annoying bug in the code that registers the EventLogging schemas in the MobileFrontend extension [0]. The bug resulted in browse and diff click events failing to log as associated schemas weren't registered.
The patch that introduced the bug was merged on Tuesday, 25th August, which, I think, means that it'd have been deployed on Thursday, 3rd September – that's a long weekend's worth of data that we won't see again.
Thanks to Alex for squashing the bug so diligently.
–Sam