Temporary problems stop looking permanent
Three separate faults shared one shape: something that was only going to last a few seconds got written down as final, and nothing ever went back to check.
A view that failed instead of reconnecting. Parts of the platform restart quietly in the background — that is normal housekeeping. If a page happened to be drawing itself at that exact moment, it stopped with an error panel and the internal fault text, and it stayed that way until you reloaded. It now says it is reconnecting, and the content reappears on its own once the restart finishes. Nothing had gone wrong, so nothing needs fixing by hand any more.
A plugin dropped for good after one slow moment. When a deployment starts up, it installs the packages it is configured to ship with. If one of them could not be reached in time it was skipped — correctly, so the others still install — but it was then recorded as though it had been installed, so no later start-up ever tried again. A single slow moment quietly removed a package from an installation for good. Failed packages are now recorded as failed, retried on the next start-up, and listed so a missing package is visible without reading server logs.
A partly-imported space that reported itself up to date. When a space syncs from a repository and most files import but one does not, the sync used to move its bookmark forward anyway. Every later sync then answered "already up to date" and the missing file was never retried — while the space's own screen said everything was fine. The bookmark now stays put until every file has landed, so the next sync picks up what was missed.
A related cause behind the first two has also been fixed: one internal readiness check was asking about content that legitimately did not exist yet, and that question could briefly block the very write it was waiting for.