recurring benign error about `surrogate%`

This error has been popping up occasionally at the bottom of my DrRacket window. I’m unsure what it wants from me, since it doesn’t seem to prevent any code from running. When I dismiss it, it goes away for a while, then resurfaces.

dynamic-require: name is not provided
  name: 'surrogate%
  module: #<resolved-module-path:"/path/to/git/racket/racket/share/pkgs/gui-lib/scribble/private/indentation.rkt">
  context...:
   /path/to/git/drracket/drracket/drracket/private/in-irl-namespace.rkt:52:0: get-definitions-text-surrogate/inside
   /path/to/git/drracket/drracket/drracket/private/insulated-read-language.rkt:156:7
   /path/to/git/racket/racket/collects/racket/contract/private/arrow-higher-order.rkt:342:33
   /path/to/git/drracket/drracket/drracket/private/module-language-tools.rkt:298:6: core672
   /path/to/git/racket/racket/share/pkgs/gui-lib/framework/private/logging-timer.rkt:41:0: log-timeline/proc
   /path/to/git/racket/racket/share/pkgs/gui-lib/mred/private/wx/common/timer.rkt:34:38
   /path/to/git/racket/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:454:6
   /path/to/git/racket/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:505:32
   /path/to/git/racket/racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:653:3

Start by reproducing the recurring error in DrRacket and trace the reported entry point in drracket/private/in-irl-namespace.rkt, then inspect the related calls in insulated-read-language.rkt and module-language-tools.rkt. Use the stack trace to follow the interaction with gui-lib/scribble/private/indentation.rkt. Done means the benign surrogate% error no longer recurs during normal use, with a regression test if the relevant test location is identified.