9:58:32phoeCCL just got a bugreport at https://github.com/Clozure/ccl/issues/379 that seems to stem from the fact that some part of CLIM attempts to read a font from a stream that was created in another thread
10:07:41phoesee https://ccl.clozure.com/docs/ccl.html#stream-extensions for the :SHARING option for CL:OPEN