There have been multiple reports since yesterday that even after lint errors on pages have been fixed, the Special:LintErrors page isn't getting updated.
There are 3 potential culprits in the pipe (Parsoid, Linter extension, Changeprop / Job Queue)
(a) Regression in Parsoid no longer linting pages (b) Something broken in changeprop / job queue that linter update jobs aren't getting run (c) (b) Some breakage in the Linter extension wrt updating the database
Looking at the trwiki report, the user is reporting that linthint is continuing to work properly. Since linthint makes a request to the API to find lint errors on a page which initiates a fresh Parsoid parse of the page, we can rule out a regression in Parsoid.
So, that leaves us with either a problem in changeprop or in the linter extension itself.