Then my best guess would be that the supposedly fixed bug with the printer spooler introduced in the september security patch for ie 11 components still persists in a 1909 enviroment which did not install the fix prior to the update and now can not install the fix (KB4515383) meant for 1903.
Please report this information to Microsoft using the Feedback-Hub so this can be fixed.
I'll be searching for a workaround and in the meantime release the question in case another expert found one already.
I'm sorry i could not solve your problem immediately.